The OPA2134 (or NE5532) input stage provides the necessary impedance conversion from the source to the input of the THS6012. For these reasons, I left the OPA2132's in the sockets (for now). 18 audioXpress 10/08 www. Below are THD+N vs. NE5532 - Clearly more accurate than the OPA2134 but violin tone was not quite as convincing as the LME49720. And my last amp E11 was not upto my taste. 5) April 1, 2018 admin Kommentar hinterlassen so, 😉 got yesterday my „ OPA2134 “ and had finally the time to check it out 😉 For the NE5532 the current noise is around 700fA for the OPA2132 it is just 3 femto amps (this specification is often given in pA hence the quote ‘in’ of 0. 29/12/2011 · Kunde nu direkt jämföra och kom fram till att den gamla (modifierade) lät betydligt bättre, för röster framförallt (OPA2134), och NE5532 i den nya, men även här i den nya sitter bipolära elektrolytkondensatorer på utgången, vilka jag tror är den största boven i dramat. jpg: 2015-09-03 13:33 : 48K : tex. Lme49720 vs opa627. A lot of op amp talk is full of audiophile nonsense that I am sceptical about. 21 postage; Contrary to the DS-1, this set of mods will focus more on overall tonality vs. Re: Comparing the NJM2068 to the OPA2134 in the Flat Preamp Post by Gold » Tue Sep 29, 2015 10:00 pm ricardo wrote: The one item we haven't added in this investigation is the effect of the optimum load capacitance. Designed to optimize audio performance. amplitude for all opamps (with 560 ohm shunt resistors). Телефон: +359 888 50 50 45注意!! ここに書かれている情報は古くなっています。lm6172はあまり音がよくありませんし、opa627より安価で良い音質のオペアンプがたくさんあります。Disclaimer: You must have a moderate level of sophistication and training about electricity and electrical safety before building this kit, or using any of the ideas presented here. [1] In this configuration, an op-amp produces an output potential (relative to circuit ground) that is typically hundreds of thousands of times larger than the potential difference between its input terminals. In the mid 1970s large numbers of small FM transmitters, operating in the FM radio broadcast band (88-108 MHz) appeared on the market. Noise level is basically the same in LM4562 and NE5532, while OPA2134 is 2 dB weaker. This gives a very fast, detailed, and involving sound. The latest (version 5) Burson Discrete Opamp (SSA Supreme Sound) is perhaps the most advanced and certainly the most highly developed operational amplifier available. Compared to the NE5532 Compared to the NE5532 bipolar op-amp, it has significantly faster slew rate (20V/ s versus 9V/ s). Harpsichord was lost. TL072 Whichone is quieter? NE5532 Votes: 0 0. I've replaced the old TL082 in my active crossover with opa2134. OMG! You are god sent. 2604 vs. Got a couple of those xpa-100 monoblocks , sweet sound!!!, there is a ne5532 opamp on the back panel pcb (where the rca's and xlr's inputs are). jpg: 2015-09-03 13:33 : 4. Use a ballistics chart (and make your own dope book) to figure out offset at different distances. The noise figure is more important in the first op amp position, which is why I'm using an NE5532AP. None of the audiophile grade equipment companies are present in India at this time except Fiio. I've studied around in different forums and found information about differences between the resistor value going to ground. The Lycan was sent to us free of charge together with the V4 and V5 discrete op-amps. G'day all, I have a reasonably large collection of NOS and used but electrically ok op amps, all the way from TL072 to LM4562 and everything in between including NE5532's. jpg: 2018-12-23 14:17 : 6. Fill PartNo and click «Search» button, we'll show you all available parts for replacement. Highest curves are OPA2134+BUF634, middle LME49600+OPA2134 and lowest LME49600+LM4562. The OPA2134 is a dual opamp. 'DIRECT' with very interesting observations. Hey hey Pietro. The only competitors of our card under review are new Auzentech cards on CMI8788 and the Auzen X-FI Prelude 7. 45 By the time I have something that works I'll make sure it's socketed and do some blindfolded listening tests . TL072 e Bifet si functioneaza bine cu impedante mari la intrare (bineinteles si cu impedante mai mici), dar NE5532 este realizat in tehnologie bipolara si ca sa mentina un raport semnal/zgomot bun, ii plac impedante mici la intrare. It's best used as a cheap audio op amp where you can control the system gain to keep input voltages well away from the rails and where it doesn't see too much of a load since it can't drive high currents like say an NE5532 or OPA2134 (which are much better audio op amps). 5V minimum V S requirement. But with 3 differents twist: 1. One more observation: the output of this unit is very high -- have to use a much lower volume setting on my preamp. It started with a self-build kit from the Danish manufacturer Jostykit that allowed everyone to build a small FM transmitter for a few Euros. Refusing to go back to the headphone jack, I took it as an opportunity to build another amp—perhaps one a little more advanced. These feed the purified audio signal into an eight-channel low distortion, half passive volume Identify IC TDA7293 and TDA7294 Fake or Original TDA7293 and TDA7294 is a common feature of the bootstrap capacitor is not installed work as usual, which gives an opportunity for unscrupulous traders to provide fake, counterfeit goods market is the most polished printed for the TDA7294 TDA7293, from the printing on the can identify, find a few Als alternatief voor een NE5532 is een LM833 ook een goede vervanger. While the number of power phases is a poor indicator of a board’s ability to support high overclocks, it does serve as a general guide of overclockability. In comparison to the stock NE5532, the OPA2132 removed some (but not all) of the congestion, tightened up the bass, and presented smooth highs. Tu bym dał NE5532, ale OPA2134 też No i tu mamy istotę problemu Dlaczego NE5532 lub OPA a nie Podobne tematy Porównanie wzmacniaczy operacyjnych TL072 vs OPA2134. OPA604 >> OPA1641 Lower noise and distortion. Shop with confidence. be sure to use the ne5532 opamp. 5V RMS -THD + N 0,0004% Định dạng đầu vào: I2S (SCK – BCK – DATA – RLCK – GND) Read Dac 192khz Usb Reviews and Customer Ratings on tool, ph, ne5532, power amp Reviews, Consumer Electronics, Digital-to-Analog Converter, Headphone Amplifier, DAC Reviews and more at Aliexpress. I tried a couple different Opamps like the NE5532 and the OPA2038 (I think this is the wrong number), but the LM4562 and the original OPA2134 sounded the cleanest. You may also substitute an OPA2134 or your favourite device, taking note of the following … It features the highly regarded Cirrus Logic CS4398 DAC chip—along with WIMA, EPCOS, and Nichicon FW capacitors and the OPA2134 high-fidelity opamp—and supports DSD64, DSD128, and PCM formats up to 24 bit/192 kHz. The NE5532 is kind of different in that it has input protection diodes, but the slew rate on the 833 and 5532 are similar - 7V/microsec (833) vs. As mentioned previously the OPA2134 in BIFET is a decent performer. The opamps that Rod recommended were NE5532's or OPA2134's, I settled on my favorite AD823's in sockets for some op amp rolling later on if necessary. Point of Impact - Explaining Muzzle Offset and relationship to target distance from zero. Geiri's video of his Zendrive build with AMZ MiniBooster in the same box. 29/07/2014 · Ne5532 Guitar Preamp Schematic Hi all, I'm in pursuit of the lowest noise floor electric guitar possible for direct NE5532 or similar op-amp will usually give you beter results. OPA2134 >> OPA1642 Lower noise and distortion. 9V/microsec (5532). Supply Current vs Supply VoltageFigure 4. The NE5532 is pretty good, has ordinary transistors on the inputs but is old. OPA134 Posted 10th February 2012 at 11:49 PM by rjm I've long been in agreement with Douglas Self on the NE5532/NE5534 Opamp. New 170 series motherboard have been released, and it looks like the major players are throwing a little bit of focus on onboard audio, as it is one of the few features/functions that can vary in quality between manufactures. Supreme Sound isn’t but indirectly there of course is a link. permalink Maximum output swing at 7X gain also sees NE5532 (beefier output stage) and OPA2134 (can swing closer to the rails, slightly beefier) pull ahead. Had an external bypass, polyester type, 0. Furthermore we insisted on a top quality lead free solder and temperature controlled soldering process. Design Considerations - Op-amp based Phono Preamp. This is often overlooked in audio design where general-purpose IC-based op-amps are widely used. Top. The Systech Harmonic Energizer is an ultra-rare filter/distortion effect from the ’70s that takes the fuzz-wah formula in some interesting directions. My Mac/Pod play sufficiently loud enough as they are for my taste, so I figured to leave out the gain stage. DAC2 DX, and I changed the FDO op-amps, the 3x NE5532, with 3x OPA2107. The Begining: In the begining Rainbow Joaw was an optimist for just chucking identical pin chips in here and there thinking 'yeah man, thats good enough for jazz'. The SMPro I only used the MOTU clock and converters. First impressions were truly amazing! The first thing I noticed was the crystal clarity and the very much improved stereo separation. While the NE5532 is a great chip for many applications, it has two problems when you use it in a BD-2: - The thing is a current hog. I've studied around in different forums 31 Oct 2015 Is there any superiority in terms of producing bass sounds? Ad8512, opa2134, or ne5532? They all have the same pin config. This is a fast VFB opamp, and as shown has a gain of 2, or 6dB. Телефон: +359 888 50 50 45Disclaimer: You must have a moderate level of sophistication and training about electricity and electrical safety before building this kit, or using any of the ideas presented here. Optimized for any moving magnet or high output moving coil, the Muffsy Phono Preamp offers spectacular RIAA compliance, ultra-low noise, a wonderful great sound stage and superior detail. Therefore if the source impedance is very low (spec'd at 20 ohms), the NE5532 is 3 times quieter. If you read the data sheet it has a full design for you. Just some random collected information about certain OpAmps. Buy Cheap Dac 192khz Usb Now. My headamp is DC coupled, so it takes all frequency from DC. 5pcs free shipping OPA2134P OPA2134PA OPA2134 DIP-8 o Amplifiers . If you want to use as a DAC ,you should switch to "LINE out" mode. OPA2134 OP amps. 注意!! ここに書かれている情報は古くなっています。lm6172はあまり音がよくありませんし、opa627より安価で良い音質のオペアンプがたくさんあります。Disclaimer: You must have a moderate level of sophistication and training about electricity and electrical safety before building this kit, or using any of the ideas presented here. This amp is tiny, compact and packed with features with a more-than-reasonable price in the audiophile world. Line-level Active 3-way Crossover Filter NE5532 OPA2134 PCB only DIY Audiophile. 04/10/2018 · I have a LM4562 in mine vs the OPA2134, I did tend to prefer the sound in some specific tracks. For the P06, I think the OPA2134, NE5532, LM4562 and LM833 are probably best. JPG: 2015-09-03 13:32 So I need -5 volts to pull the signal down again (removing the DC offset. At something like $2 for the dual version its not as cheap as the TL072 but still affordable. The OPA2134, Burr Brown's very newest high-performance dual audio op amp may be purchased instead as an optional $10 upgrade. New Op-amp (linear) Ic Tester (ne5532,ne5534,tl074) A50 2. Dual OP Amp Board Preamp DC Amplification PCB for NE5532 OPA2134 OPA2604 I have a cd player SONY XA2-ES, It has four opamp NE5532, I'm thinking to change them with OPA2134. While I was at it, I also used my Modded SMPro Audio PR8 (one channel modded with TI NE5532's and another with TI BurrBrown OPA2134's) and my Behringer ADA8000. Leaving out the NE5532/4 voltage gain stage and using the diamond buffer section only to present a low impedance output to my headphones. You can switch TL072 with OPA2134 pretty safely and and sometimes you can swap NE5532 with TL074 in Low input impednace Opamp configureation. 1 to be launched this year. 在市面上能买到真的ne5532已经很难. performance. For FET, I've found the AD825 sounds quite nice - better than OPA2134 and OPA2604; the OPA827 has also received praise, however, I haven't tried it yet. JPG: 2018-12-19 08:03 : 52K New 170 series motherboard have been released, and it looks like the major players are throwing a little bit of focus on onboard audio, as it is one of the few features/functions that can vary in quality between manufactures. The OPA2134 has nearly half the the amount of mA swing (40mA) as the 4556, but sounds way better if it does not get quite as loud. I recommend building the P99 sub bass filter too, especially if your loudspeakers are ported. The cheaper and more common NE5532 is roughly equal. Ok - so I want to upgrade my soundcraft ghost preamps and master section by upgrading the chips. It has several protections like from output short circuit to GND or to Vs, capable to handle very inductive loads, thermal limiter, load dump voltage. 2014-07-09 - 1 - LOW-NOISE DUAL OPERATIONAL AMPLIFIER GENERAL DESCRIPTION PACKAGE OUTLINE The NJM5532 is a high performance dual low noise operational(possibly) subtle audible change is the OPA2134 which is designed with FET’s. Being a faster chip (33 MHz vs. Below are THD+N ratio vs. i also tried 4560 and opa2134, but i like more the ne5532. It totally depends on the circuit. Otherwise there is little advantage over an NE5532, LM833 and similar. 不过如果真的要比较建议楼主两个都买来试试换插 Although I used an NE5532 opamp for the prototype, the circuit will also work with a TL072, but at reduced power. You may also substitute an OPA2134 or your favorite device, taking note of the following Figure 2. I own the Denon 5900 and curious if the I am currently experimenting with AutoEQ vs. You may also substitute an OPA2134 or your favorite device, taking note of the following I say get the opa2227. Телефон: +359 888 50 50 45Reddit has thousands of vibrant communities with people that share your interests. I have tried the latter (with 3K and 1K gain setting resistors), and it worked fine It should be some mistake is the user manual ! When you switch to "P-line out" mode, the volume control can be control the output level. OPAM I/V NE5532/NE5534 (có thể thay thế Opam khác) Thông số đầu ra: 4. That is what got me wondering if there were any new and improved op amps that could be direct replacements for my Drawmer 1960. Tu bym dał NE5532, ale OPA2134 te Podobne tematy Porównanie wzmacniaczy operacyjnych TL072 vs OPA2134. Top Electronic Component Parts. Figure 1 circuit is an excellent performance, improve the design of the fever-100 W × 2 DC Servo Amplifier current negative feedback stereo amplifier, formed by the two TDA7294, the frequency response of 10 Hz ~ 100kHz. 213. Op-Amps: NE5532 vs OPA2134 vs. Prosty tester wzmacniaczy operacyjnych. com T his circuit contains an audio amplifier capable of driving a speaker with circuitry that au-tomatically maintains the same I selected OPA2134 because it is designed for low noise and very low distortion. The OPA2134 (blue) and the NE5532 (pink) get slightly closer to the rails before they clip but otherwise deliver very similar performance—all 3 parts are so close to the analyzer’s residual it’s mostly a tie. Single-Supply, Rail-to-Rail Low Power FET-Input Op Amp Data Sheet AD822 Rev. It's a very common op-amp, but it's not bad (personally I think the OPA2134 is a bit nicer sounding). The TC-778 combines the proven low noise discrete RIAA design found in the TC-750 with the ability to select equalization much more appropriate for playing and recording 78rpm records. True Hifi. Professional DAC, very well built with excellent components including OPA2134 dual operational amplifiers replacing the veneral NE5532 found in competing products. Voice reproduction was BEST in the NE5532 ! Unfortunately it was a bit low in the HF. If someone thinks TL074 is too mainstream, it would be possible to use something more audio grade like OPA2134 or NE5532. The differences between topologies, PCB layouts, and components used are discussed with emphasis on BOM cost vs. Had an external bypass, polypropylene type, 2uf capacitor across pin 4 and 8 added. The BD-2 already reduces both the current and voltage down to 8VDC. (OPA2134-NE5532-Muses8920) Mai 1, 2018 admin Kommentar hinterlassen so, 😉 again: i´ve changed the NE5532 on the ES9018K2m today to an „ OPA2134 “ and i hear absolutely great differences. LM is the best overall, it sounds the most balanced, very natural/smooth/clean, doesnt exaggerate anything but can sound lacking in impact. УВАЖАЕМИ КЛИЕНТИ, В МОМЕНТА ФИРМАТА ИЗВЪРШВА САМО ОНЛАЙН ПРОДАЖБИ. opa2134 $2. The $3 OPA2134 is supposed to sound much better than the $1 NE5532 and the $10 AD8610 is supposed to sound better still. Results NE5532 with Rl=1k1 and different output levels vs frequency NE5532 with Rl=520R and different output levels vs frequency Audio Opamps, fact, myths and THD measurement resultsRev. The 5532 is a low-noise, low-distortion bipolar dual op-amp, with internal compensation for unity-gain stability. Operational Amplifier Design Operational amplifiers are simple to use, inexpensive and offer a very large amount of gain. This is all but eliminated in this design, and since the NE5532 and OPA2134 can both drive a 600 ohm load with ease, the 820 ohm output resistor isolates the NE5532 - the only good is from Signetics, all others suck LM6172 - very nice, impactful, clean, dark, some people find it cold OPA2107 - dark and laid back sound, very deep soundstage, not so broad NE5532 - the only good is from Signetics, all others suck LM6172 - very nice, impactful, clean, dark, some people find it cold OPA2107 - dark and laid back sound, very deep soundstage, not so broad Personally, I like the ne5532 with the cs4398(about the same detail level as the opa2134 subjectively but smoother sounding in my opinion). "Point of Aim vs. 0% TL072 Votes: 0 0. Anybody still using the humble NE5532 in their high quality 16 Feb 2007 I am building a 3-way active cross over circuit. That could be an issue in 9V circuit. The OP27/OP37 or similar may be attractive if a lower bias is needed for some reason. audioXpress. The Roland VS-2480 Tech Help Web Site, For All VS-2480, VS-2480CD And VS-2480DVD Owners. 3K : vca. Lme49720 vs opa2134. It's amazing how much improvement a relatively "expensive" component like the OPA2604 can make -- we're talking $4. 7 Typical Characteristics Figure 1. NJM4556A: I have LME49990 and OPA2134. OPA134, OPA2134, etc. I figured the Timmy was so simple and inherently transparent that it would be a perfect platform for testing all of these opamps. 9K : What_Is_The_Fastest_Way_To_Kill_Google. Input Bias Current vs TemperatureFigure 5. You may also substitute an OPA2134 or your favorite device, taking note of the following You could simply increase them by a factor of 10 (to 6k8 and 2k2), but I'd recommend 3k and 1K. Most of the figures of the two are similar - the NE5532 just seems to expand on the higher-end performance. Lme49720na class a. " What about the BB OPA637 or OPA2134? I just opened the Puccini, and there is indeed a mute/protection circuit, comporting a big relay, some caps, resistors and diods, some transistors and a NE555P and LM393N. So I just put fresh strings on my strat this morning and found a package from Tayda of 12 different dual opamps. I've studied around in different forums Oct 31, 2015 Is there any superiority in terms of producing bass sounds? Ad8512, opa2134, or ne5532? They all have the same pin config. I've tried the lme49720 on a few dac and had the sameish experience as you. you should hear "improvements" over you opa2134 or you can try the opa2107's brother, the opa2111. 1 4/19 2016-07-13 ACAV Burson V6 Vivid and V6 Classic fully discrete audio opamps. This is the most important mod in the series of possible mods because it's like everyone on the net with a Zhaolu is saying that this is a very good upgrade, the others being OPA2107, OPA2134 (or 2132, both not as good as the rest though), LT1469, the king of op-amps (and overly expensive) OPA627, and discreet op-amp stages like the Zapfilter. But then on the good side, the motherboard comes with OPA2134 as an on-board ‘default’ Op-Amp and is a good performer indeed! OPA2134 is yet another well known Op-Amp amongst DIYers and Audiophiles. tl072 和ne5532哪个好. Wider GBW, lower quiescent current. com 7. Bipolar op amps were dominated by the NE5532 and it's a great chip, and the LM4562/LME49720/LME49860 an obvious upgrade for that niche. BONUS: I am including (3) Op Amps along with the one installed, the NE5532. Muses 8920 (02) + ESSabre-Link (+DietPi 6. Audio op amp comparison NE5534A vs. This chip has industry standard pinout, meaning that there are several different suppliers manufacturing pin compatible 4558 devices and also it can replace other standard dual op-amps like the TL072, NE5532 or the OPA2134. So starting out, you may want to wait on that one for a mixer. 8 MHz), it wasn't stable in some of my amps, probably due to minor circuit layout problems. EUR 7. I just picked up my 3805:D and curious how to properly set it up. This reduces thermal variation and eliminates crossover distortion, which makes the chip perform better. I found one posting in a board where a guy claimed he changed the ne5532 to the opa2134 and noticed a real difference in a DBX compressor. I actually considered getting the Oppo BDP-105 to use as a pre/dac and mate directly with the MCH-300SEC7 (might still test that combo) but as of now I'm a happy camper. Where it did seem cleaner. My experience with Burson Supreme Sound discrete op-amps I swapped the stock IC op-amps (OPA2604 and LME49720) inside my DAC with Burson Audio Supreme Sound discrete op-amps. This information allowed me to take a deep dive into the assembly of a Pre/Pro and the results are discussed in this article. AD823 LM 4562 BB OPA2134 EDIT: I will ship the original box, shown, within another box and The world of technology, electronics, electronic circuit and audio amplifier and electronic circuit design and services are many other free Lm4562 vs ne5532 For FET, I've found the AD825 sounds quite nice - better than OPA2134 and OPA2604; the OPA827 Bipolar op amps were dominated by the NE5532 and it's a great chip , and the . Output Swing Bandwidth vs Temperature at VCC = ±10 V You could try swapping the OPA2134 with a NE5532 initially. Email to friends Share on Facebook - opens in a new window or tab Share on Twitter - opens in a new window or tab Share on Pinterest - opens in a new window or tab (in my Peavey Classic VTX, it had a couple of bad opamps: I replaced them with NE5532 but while I was in there I did stick a couple of OPA2134's in its U1 and U2 locations, and it works fine) The Saturation is pretty smooth but I don't crank it all the way up these days, just getting a little dirt in there is usually all I seek. TDA7384 is an AB power amplifier cased in flexiwatt25 (eagle library is included in project archive) package witch is designed for high end car radio applications. Never figured out why everyone ***** their pants over the JRC4558. Network and audio. While the number of power phases is a poor indicator of a board’s ability njm4580, njm2114, ne5532. Alternatively, find out what’s trending across all of Reddit on r/popular. 0% The NE5532 series are designed specifically for audio applications, so are probably 注意!! ここに書かれている情報は古くなっています。lm6172はあまり音がよくありませんし、opa627より安価で良い音質のオペアンプがたくさんあります。Disclaimer: You must have a moderate level of sophistication and training about electricity and electrical safety before building this kit, or using any of the ideas presented here. Stage one of this mod involves changing the stock JRC4558 IC to a much cleaner, higher efficiency opamp. Jual IC Driver A2C08350 - CV. 77 + EUR 2. Find great deals on eBay for burr brown opa2134. Yellow channel = Clean Boost, OPA2134 (CA3240E is close in performance) (DIP switch = UP down down down) The NE5532 almost made it into the red channel, but the JRC4580D has a more focused midrange which I like. RPC-1 R-BUS Information, Driver Updates, Software Updates, Tips And Tricks, General and Technical Help. you can buy it as a kit, but also the schematic is in the homepage. opa2134 vs ne5532I'm playing around with some simple headphone amps ( again ) with NE5532 vs. Although I used an NE5532 opamp for the prototype, the circuit will also work with a TL072, but at reduced power. 要谁真的想找真的ne5532那真要去找拆机的把. my opinion. GitHub is home to over 28 million developers working together to host and review code, manage projects, and build software together. Sadly, I fried the op-amp in the Cmoy (the little chip inside that does all the work) after listening to it for 6 months. Go to TI's web site, register, and they will send An operational amplifier (often op-amp or opamp) is a DC-coupled high-gain electronic voltage amplifier with a differential input and, usually, a single-ended output. If the NE5532 improved its HF performance it would sound the best of all these by a reasonable margin . the power supply is basically a brick with a toroidal inside it and it comes with a USB Type A to B cable. Lme49720 vs muses 8920. NJM5532 Ver. The NE5532 is cheap as errr chips, so it might be worth getting a few to experiment. Duta Electronics Pratama toko online komponen elektronik online Jual ic dengan harga terbaik. . LM2917 AD7524 ADC0804 LM339 LM34 TL072 LM2575 NE5532 SN7407 LM7912 MAX3232 ICL7135 TL494 OPA2134 89S52 LM13700 PCF8574 UC3845 Parent Directory - webmaster. For the test circuits I used TL072 for the first stage and it was much noisier than NE5532 (hiss was noticeable). PCM1794A output stage opamp measurements: LM4562, NE5532 nihtila. Ive compared the NE5532, NJM4556 and LM4562 so far. I've been using TL072,NE5532 & OPA2134 exclusively in most of my design projects,& the improvement from TL072 to OPAxxxx is remarkable indeed. 66) Posted by Tweaker456 on 2016-12-24, 21:39:22 (70. the OPA2134, and these are used in my own units. Ive compared the NE5532, NJM4556 and LM4562 so far. The sound is much better but there's still something a bit "hi-fi" and "grey" in the presentation. Too bad you can't use the BUF34U in this amp. So far, my favorite combo is the 2228 in the input (U1) and the 2134 in the output buffer (U3, U4). RIAA stereo preamplifier classic version, based on the NE5532. No matter the industry specialized tooling is required to optimize performance. Actually, the NE5532 is 233 times higher). Biasing Op-Amps into Class A Introduction “Class A” refers to configuring an amplifier so that its output devices remain turned on all the time. Output Circuit Current vs TemperatureFigure 6. Stay ahead with the world's most comprehensive technology and business learning platform. These IC's come in a variety of packages with 1, 2 or 4 complete Op Amps in a single IC. Supply Voltage . strangely its probably the most boring sounding one when paired with 400i but the best sounding with hd600 The 5532/5534 is an excellent sounding and very durable work horse; the OPA134 series can be adequate too. Thank you so I've just placed a couple of NE5532's into my DIY ESP P06 and they sound fine. Abstract: NE5532 ST ne5532 phono preamp NE5532 application notes ne5532 application note riaa preamp NE5532 ne5534 equalizer 2904H pin configuration of ic NE5532 ne5532 Text: as indicated. It is also very cheap and besides the NJR (2068, 4556) there are few parts in the same price range with overall similar performance. The circuit has been specially designed to eliminate pop noise, and the laser-engraved aluminum shell is sleek, sturdy, and compact. Go to TI's web site, register, and they will send you samples overnight (yes, to students as well) You can get about 4 each of at The original uses a Burr-Brown OPA2134 op amp, and while they usually are a big improvement over standard dual op amps, I hated it in mine so after testing it with 40 others, the MC33172 sounded the best by far. Lme49720 burst noise. Per channel they seem to be before the NE5532 on the analog board and an other two on the jack board just before the DAC. Would the whole JFET/BIFET compatability issue be less so in a line amp vs a mic amp? I'm just confused because there was a guy some time back that swapped out all the 072's in his Tascam 388 for 5532'sI guess that's why I'm befuddled by the reality that the two IC's aren't considered "compatible". When I was able to avoid instability, it sounded a bit more analytical than the OPA132. Probably the generic TL072 but I think I'd better show you my latest schematic (when I've labelled it) because I really don't know. 00 here, folks, (vs. 5) April 1, 2018 admin Kommentar hinterlassen so, 😉 got yesterday my „ OPA2134 “ and had finally the time to check it out 😉 Mix - OP-AMP test TL072 vs 2134 vs NE5532N vs NE5532P vs 2604 - ADA MP-1 YouTube; Busting the myth of magical op-amps and diodes? - Duration: 19:05. The did I miss any was in reference to all the standard disclaimers. The PSU I built puts out + & - 18vdc as opposed to the recommended 15vdc as I already had LM8918 / LM9818 rectifiers on hand. Logged Yes the NE5532 has stood the test of time and is still a top notch dual op amp Anybody still use the NE5532 in high quality audio gear? Looking at the circuit diagrams for the amps NE5532's were everywhere and they sounded clean and NE5532 vs. With Safari, you learn the way you learn best. I know Rod. Generally the feeling around here has been that swapping them out isn't worth the bother as the audible difference has been questionable. I did find one part in one song with a specific background sound that was cleaner on the LM4562 vs the NE5532. The OPA2134 is over ten times the price of the TL072! . “Ian” is the name. ad8066, lm4562(=lme49720), ne5532, opa2604, opa2134; cランク njm4580, njm2114; aランク. I really just want the good, but workhorse, jfet op amp that's a replacement to the TL072. NE5532 From TI. Tried all three in a TS at one point or another and they all sounded nicer than the 4558 that was in there. The build quality is top-notch, and even if you just place it on the desk (with the matching PD-301 CD player, it's a beautiful sight. I'm speaking of spotting a OPA2134 vs any 4558, and so on. Greetings from Singapore Bought this from the second hand Hi Fi Market Listen it with Sennheiser HD 650, but it feels like the sound is congested. 83) The OPA2132 is the clearly superior fet device out of these four, IMO, from listening to it in the output of a dac. With LM4562 sweep goes until 4 Vrms input level, while before it has been up to 2 Vrms, that is why the lowest curves goes all the way to 500 mW. Not that the opa have much higher input impedence than the bipolar ne5532. how bout ne5532, as what i've read, it has a larger bandwidth compared to opa2227, does it matter? im planning on getting the opa2227 though. 6. Reddit is also anonymous so you can be yourself, with your Reddit profile and persona disconnected from your real-world identity. The board boasts an 18+2-phase digital power design, with the two additional phases dedicated to the memory components. 0 Speaker (mf1675aa002) - - Computers & Accessories Metrum Acoustics Ambre Roon Music Streamer Endpoint The Best For Roon the OPA2134 is a "reasonable" option at about 3 bucks a shot,i need four of themwith shipping that's about 20 bucksbut other options,and there are many,can run significantly more than thatas i said in the first post,there are 8 5532's following those,luckily i'm pretty happy with the improvement the TI's made there,as anything else the OPA2134 is a "reasonable" option at about 3 bucks a shot,i need four of themwith shipping that's about 20 bucksbut other options,and there are many,can run significantly more than thatas i said in the first post,there are 8 5532's following those,luckily i'm pretty happy with the improvement the TI's made there,as anything else Op amps: 10 X NE5532: a classic and proven dual audio op-amp (20 op amps total). But the price is too high, OPA2134 is cheaper than OPA2132 and the PSRR is the same as OPA2132, I know they are used for audio amplifiers. Any other fans of the OPA2134 for its 'sound' quality? Regards, Felix. Pre svega, moram ponovo napomenuti da je napajanje +-5V koje se dele sa DAC-om tako da svaki ovde izneseni stav treba uzeti sa rezervom osim ako neko ima isti ili slican plejer. ne5532这东西的确太经典了. But just as evolution is never linear, two V6 circuitries emerged to compete for the hearts and minds of music enthusiasts. OPA2134 datasheet, cross reference, circuit and application notes in pdf format. 此电路由ic1直接作前级放大和耳机放大。 适用于输出电流比较大的运放ic。 如jrc4556、ad8397。但一般这些ic都需要较高的工作电压(至少≥±6v),音质才能上去。 If you open up any of the other modelers/profilers out there I guarantee you will find an OPA2134 on the instrument input and the rest of the op-amps will be NE5532 and/or TL07x (or some of those crappy NJR things). So,a OPA2134 would be the best alternative to TL072 IMHO. Hi Alex, just fyi, I have Dr. 所以我当时也是觉得奇怪. Okay, here’s an old weirdo I’ve been meaning to write about for ages. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more. The author's test equipmet can measure down to "only" about 0. I have a Nov 27, 2017 I'm looking for a replacement for the NE5532 (dual opamp), which can i have tested the opa2604 and the LME49720 compared to the ne5532. Architecture wise, this is a 4558-derived part employing second-order compensation. When high Q-factors are to be achieved low Thus, you can replace the NE5532 with the OPA2134 for $16-20 to upgrade your card to the Gold edition. OPA2134 is een beetje aan de prijzige kant, maar als geld geen rol speelt Any Comments on TL072 Vs NE5532?also AD826AN Vs OPA2604? « Reply #4 on: December 21, 2005, 12:15:51 PM » For cheap pres like this one, I like either the MC33078 (bi-polar input) or the OPA2134 (FET input) better than the 5532. The opa2134 or OPa2132 is generally better than ne5532 but the question is rarely so simple. Телефон: +359 888 50 50 45. com. Input Voltage Swing vs. One factor often overlooked with phono preamps is the capacitive loading on the opamp output at high frequencies. Often it can depend on the circuit implementation though. which got a nice sound stage, better controlled highs and bass. Is it really a good sound improvement I'm playing around with some simple headphone amps ( again ) with NE5532 vs. The Muffsy Phono Preamp is a complete DIY hifi phono preamplifier kit that anyone can build. I haven't owned a current production CDPs (NAD, Cambrdge, Rotel, etc. I bet the '2068 still eats LM833 and MC33078 for lunch though. here are all the chips for popular dacs. The combined gain is about 20dB, which is more than enough, and may need to be reduced in many applications. amplitude measurements (below) with 1 kohm the same in LM4562 and NE5532, while OPA2134 is 2 dB weaker. Good quality but affordable alternatives to the NE5532 include the OPA2604 and the OPA2134. Thank you so I noticed someone talking about an OPA2134 as a replacment. This is all but eliminated in this design, and since the NE5532, OPA2134 and LM4562 can all drive a 600 ohm load with ease, the 750 (or 820) ohm output resistor isolates the output stage from any capacitive loading. The type of capacitors C 2 - C 9 is important. Join GitHub today. The Burr Brown op amps at a few dollars a pop could get really expensive especially if you decide to build the full 31 Band version. opa627aは1回路入りしかありません。これを2回路入りのne5532, opa2604, opa2134, njm2114, rc4558などと交換するにはこのように変換基板を使います。裏表にopa627aが乗っておりサイズが小さいので8pin dipのスペースにそのまま入ります。 IC2: 8dip TL072 (dual operational amplifier for input/output stage), for better audio quality and higher resolution can be replaced with Dual OpAmp like: NE5532, OPA2604, OPA2134 or with other pin compatible and with similar characteristics. it uses only conventional components, you can easily find components at an electronics store. Hermida Zendrive Another popular pedal and rightly so, this is a great sounding overdrive. So far I read the OPA2134 as an upgrade to the LM but its quite expensive, has May 24, 2015 The NE5532 is still good enough for most applications. Gibson Les Paul Studio - ADA MP-1 tube preamp /JJ ECC83/ - H&K RedBox MKIII - Audigy ZS2 SoundCard. And then there’s LM4562 too! Finally, talking about the price – it seems to be a bit on the higher side!. The 5534 is a single version internally compensated for gains down to 3, and an external compensation capacitor can be added for unity-gain stability; 22 pF is the usual value. Much more current can be achieved using NJM4560, NE5532 or OPA2604 op amps. The NE5532/5534 Op-Amp. It is not strictly necessary for the proposed OPA2134 allows the unit, but down substitute cheaper but more likely oscillation device, such as the NE5532, if budgets are tight. Sudah berdiri kurang lebih 10 tahun memberikan kepuasan kepada konsumen dari berbagai kalangan. Opamp. The performance gain is not necessary so I would recommend the NE5532 as the best combination for price vs. 1uf capacitor across pin 4 and 8 added. By the way, the TL07x is quoted as having an equivalent input noise voltage of 4uV across the audio band (a discrete FET or triode would be closer to 1uV). Next, a sine w ave input is used w ith a sim ilar circuit. OPA 2134, Rl = 27 Ohms, THD vs Frequency, Vout=1Vrms, BW=80kHz NE5532, Rl = 27 Ohms, differential IN NE5532, Rl = 27 Ohms, differential IN,Noise Vref=2Vrms, A-weighted Parent Directory - Tenma_72-1025_Benchtop_LCR_Meter. My DVD player is the main question at hand. I am getting back into modifying some gear and I figured I would post the notes that I have collected on Op-Amps over the years. SUPPLY VOLTAGE ± V OUTPUT VOLTAGE SWING (V) 20 15 0 0 5 10 5 10 15 20 +V OUT –V OUT R L = 2kΩ This article shows examples of possible tradeoffs for bill of materials cost vs. The improvement is quite significant, it just sounds better, better detail, depth, the sounds has more air and body. Hi forum I'm playing around with some simple headphone amps ( again ) with NE5532 vs. DIYSB seems less full of that guff. The THAT1510 is more designed for Mic Preamps. U vezi sa tim, pomenuti LM4562 vazi za jedan od najdetaljnijih op-ampova, a kod mene je svirao totalno ne zanimljivo i povuceno-skoro kao NE5532. Hi Shahriar, Here is a site with many audio opamps tested for distortion with different loads. The NE5532 is definitely much better, and I really tried hard to find differences past the NE5532. aランクとbランクの間には明らかに壁があります。 lm6172が一番ストレートな音でした。次点はop275。この2つは好みかもしれません。意外だったのがバーブラウンのopa627ap。 Input resistance of the NE5532 is quoted at 300k typical, 30k minimum, and the LM833 is practically identical to the NE. Download >> Download Opa2604 datasheet pdf Read Online >> Read Online Opa2604 datasheet pdf opa2604 review opa2604 replacement opa2604 vs opa2134 opa2604 vs ne5532 opa2604 mouser opa2604 burr brown opa2604 equivalent opa2604 price OPA2604. You can think of this as an extension of my AVR Audio Video Receiver Build Quality series with this article showing how it all comes together in a real product. It is actually best to test them in the circuit. 3. Like our passion for audio, our Opamps are guaranteed to last a lifetime. Unsurpassed Quality. I agree it's more of a "sidegrade" - the pre sounds smoother with less transients. opa2134 vs ne5532 it would be easy for sonic imbalance to occur. The only thing I can think of is that the 2604 has a ±4. 147: RE: OPA2134 vs OPA2604 vs OPA2107 (4. Dec 26, 2014 Gibson Les Paul Studio - ADA MP-1 tube preamp /JJ ECC83/ - H&K RedBox MKIII - Audigy ZS2 SoundCard. Normal audio can use the cheaper OPA2134. Kami siap melayani anda dengan contacts kami : The difference in analog stage sounding might be again, in OPA's :D Just a few producers at the level of AVM20 use OPA2134 (usually they are used at the higher level of AV processors - or let's say, more expensive) evilbetty: Okay, well probably not the NE5532 if it's used for audio. Was only the opamp (without external added capacitor) 2. The circuit is a non-inverting IC based filter with significant gain. OPA2134; OPA2228; NE5532; I am trying these chips in different combos. 听一个老行家讲现在大部分在市面卖的所谓ne5532基本都是假的. 安定したicです。よく使われるのも頷けます。音質を評価されることは少ないようですが、回路の安定という意味では良いicです。 opa2134, opa2604 Hi, Sorry if this topic has already been covered but I have searched the forum and cannot find it anywhere. The NE5532/5534 Op-Amp 118 Deconstructing the 5532 120 The LM4562 Op-Amp 121 The AD797 Op-Amp 124 The OP27 Op-Amp 124 The OP270 Op-Amp 125 The OP275 Op-Amp 126 Op-Amps Surveyed: JFET Input Types 128 The TL072 Op-Amp 128 The TL052 Op-Amp 129 The OPA2134 Op-Amp 131 The OPA604 Op-Amp 132 TheOPA627 Op-Amp 135 References 136 C7 forms 100kHz a lowpass filter with R3, to fall on the gain of unity at very high frequency, and to help promote stability in the Opamp. Kunde nu direkt jämföra och kom fram till att den gamla (modifierade) lät betydligt bättre, för röster framförallt (OPA2134), och NE5532 i den nya, men även här i den nya sitter bipolära elektrolytkondensatorer på utgången, vilka jag tror är den största boven i dramat. 为什么拆机的居然比街上全新的ne5532还贵. okay, fired up my Raspberry with the ES9028Q2M and thought I'm playing around with some simple headphone amps ( again ) with NE5532 vs. Opa2134 isn't a bad opamp, but I don't like if in lpf sections. gain. OPA2134 is een beetje aan de prijzige kant, maar als geld geen rol speelt Als alternatief voor een NE5532 is een LM833 ook een goede vervanger. ti. Transients were still good but the HF levels seemed to be a bit rounded off. Share Quote OPA134, OPA2134, OPA4134 THD+Noise vs Frequency Single and dual versions are available in 8-pin DIP and SO-8 surface-mount packages in standard configurations I have to agree I was never that impressed by the stereo imaging or tone of the OPA2134 and found the LM833 and even the NE5532 more transparent. I bought a bunch of OPA2134 some time ago, and so as soon as I checked the voltage, I swapped out the NE5532 with one. Recently I rolled my VS-1680 NE5532 opamps for the new Texas Instruments OPA1612. OPA2134 vs OPA2604 vs OPA2107 - KanedaK is it "better" than opa2134? I've replaced NE5532 with LM4562 in my CD player and they are fantastic, but then i was Op-Amps: NE5532 vs OPA2134 vs. OPA4134 >> OPA1644 Lower noise and distortion. I have a LM4562 in mine vs the OPA2134, I did tend to prefer the sound in some specific tracks. The bipolar transistor inputs of the NE5532 draw input current and are completely different from the JFET inputs of the TL072 that don't have any input current. The OPA627 is pretty expensive. Slew Rate datasheet search, datasheets, Datasheet search site for Electronic Components and Semiconductors, integrated circuits, diodes and other semiconductors. Il mercato più grande del mondo. It is a lot more "power-full", which I like, but it sometimes cuts the sound. it's got a Burr-Brown PCM1793 D/A converter, brushed aluminum chassis, Alps pot, Wima caps, Elna caps, NE5532 op-amps (Amplifier), OPA2134 op-amps (DAC), B649/D669 Transistors, Electro Harmonix 6922 tube for buffer. In TS type pedals, OP275, OPA2134, or LM833. However, if you want the best possible stereo imaging and resolution with regard to phase critical stereo information, much lower distortion is in order. But, if the second stage is not as important, could I replace the 5534 in the original circuit for a LME49990 and the inverter/follower with TL072? – hjf Jan 9 '17 at 15:43 Although I used an NE5532 opamp for the prototype, the circuit will also work with a TL072, but at reduced power. Building Of HD Audio Opamp The team at Burson Audio has been developing the HD Audio Opamp project for a number of years now. 7pA for the NE5532 and 3fA for the OPA2132 (at the website). For less requirements TL072 or NE5532 should do, too. If yours is AC coupled, you might not be able to hear or feel the excellent low bass from the AD8066. As to putting the LT before of after the xover it is a matter of choice. NE5532, NE5532A, SA5532, SA5532A SLOS075J–NOVEMBER 1979–REVISED JANUARY 2015 www. 1232我没用过. They may not be the cheapest ones and not everywhere available, but on the other hand they are not too expensive or rare. - OPA2134 - OPA2227 - NE5532 If running a pair of opamps (1 per channel) only use the inner sockets IC1-2 and IC1-3 Example of quad opamps installed Several opamp options outside of the default 4562's can be used. The new opamps were a SOIC pkg so I used small soic to dip adapters. A pair of opamps can be run VS Disclaimer: The Australian Burson Audio is a Headfonia advertiser. Looking at the datasheets the NE5532 seems to be much better than the TL072 but maybe I'm missing something. The NE5532 can be sound decent IF it is correctly implemented, which usually involves some really good PS decoupling, low Z PS traces and ground, and proper impedance scaling for the input and feedbac . LME49720 - Not so bright sound but now we could hear the correct timbre of the violins and the harpsichord suddenly appeared. We use the best components and make them perform even better with the painstaking selection and meticulous component matching process. output power sweeps into 32 Ω load, with low (0 dB) and high (10 dB) gain settings. Intel's Z170 chipset offers an integrated LAN controller, which makes implementing the network controller of the chipset relatively cheap for the manufacturers. An ordinary op-amp is designed to drive small-signal loads such as small headphones, the inputs of other amplifiers, or other circuits. 00 for the NE5532). Four of the components in the feedback loop determine the proper RIAA compensation. For one of the OP amp it's optimal with 1k and for the other one it's 2k. the best OP-amp choice for an EQ in mixer? OPA134, OPA2134, etc. No cheap wallwart but a real built-in power supply. The 2134 in all three positions is also nice and pleasant, but missing a bit of realism. The TL072 has FET inputs and is pretty good but is old. The OPA2134 is similar, but better since it has a far higher slew rate and is legendary in its tolerance to poor design. In visible and infra-red (fluke thermal camera from my job) Description of the Upgrade: I have a little dac based on CS8416 + PCM1798 Then, 2 NE5532 for the I/V section , and 2 NE5534 in output (1) I first removed the 5534 for the dip 8 sockets, and just plugged the silver pins of the bursons in the sockets. Not available in DIP package version. It is very pleasant. A 8Ω speaker simply requires too much current (amps vs millamps) for an op-amp to drive it alone. I did try the OPA2134 and OPA2604, just didn't mention them because neither performed well in these builds, surprising in a way because the 2604 was my favorite in my JHS MG, dunno why. But do they? The chip companies don’t help the perception implying some of their op amps offer better sound. I wasn't actually thinking of using sockets, but rather going the opposite direction with SMD parts. Equivalent Input Noise Voltage vs Frequency Figure 2. Both designs evolved from the Burson V5. jpg: 2015-09-03 13:33 : 161K : stereo_synth_small. The NE5532 is sufficient for systems with SNR in excess of 90-100 dB, so it's still 'good enough' for audio and the like. The two Op-amps mentioned in the video are the Burr Brown dual op-amp OPA2134PA in the cream painted build and the jrc4558 in the silver build. National's LM4562 and LME high-performance audio op amps offer some of the lowest distortion specifications in the industry, much better than old chips like the NE5532 and TL072. 005% distortion so most opamps test about the same. com/2017/01/08/pcm1794a-output-stage-opamp-measurements-lm4562-ne5532-and-opa2134Jan 8, 2017 I have made THD+N vs. I need a high PSRR amplifier, and I found OPA2132 is a good one with high PSRR. OPA2134 - nice euphonic sound but violins sounded synthetic and a little bright. To the right is a list of opamps verified to work in dual / quad configurations in Project Starlight. Of course you can use different opamps. But, boosting the output current is simpler than it sounds Op Amp Upgrades . I got it to oscillate outright occasionally, and other times I just got a kind of "grunge" in the sound. Interestingly enough the OPA2134 isn't the quietest dual op amp in the P06 circuit (but still quiet in absolute terms), and the LM4562 sounds somewhat 'sterile' in comparison, if that makes any sense. 可以。这是通用型的运放。一般音响都喜欢用NE5532,这个运 放性能可能更好点,价格也差别不大。TL0 2010-11-24. Wampler Pedals 97,745 views. the design is based on opa2134 Dual OpAmp Which has a THD=0. For comparison, OPA2134 also has good bass, but more to the mid bass, while AD8066 has better overall bass. The LM4562 is a superb dual op amp with very low noise but I prefer the OPA2134 for its sweet/musical sound. Lme49720 vs ne5532. I did try the OPA2134 and OPA2604, just didn't mention them because neither performed well in these builds, surprising in a way because the 2604 was my favorite in my JHS MG, dunno why. TL072, NE5532, OPA2134, LME49720 etc etc. Trova le offerte migliori per PREAMPLIFICATORE OP AMP NE5532 OPA2604 COMPLETO DI ALIMENTAZIONE su eBay. He gets hundreds of emails and I guess he does not hurry to answer questions – the answers to which can be found on his site. 1 Apr 2018 so, got yesterday my „OPA2134“ and had finally the time to check it out. NE5532 was VERY good in LF and midrange performance. AD825:声音全面提升,有一种豁然开朗的感觉,无论在音场或是细节的丰富程度,都比2604好上一截,整个声音延伸开来,但若器材控制力不好,会有吵杂的现象出现,许多用家替CDT-15A改了Jensen电容后,比没改前声音控制的更好,细节多而不毛燥。 Industri , Militer, Hobby, dan Perbaikan. decide which things are more subjective vs objective, but I find the list of op-amps there a good starting point. It was the popular OPA2134. When I started this audio hobby last year, my first player is a universal player Pioneer DV-667A which got good feedback in this forum for its audio performance (it has Burr Brown DAC). ), but I'm dreaming of getting one, when funds become available. 27/11/2018 · The did I miss any was in reference to all the standard disclaimers. I have selected the NE5532, but OPA2134, TL072, or TL062 would all work as well. The first RC4558 monolithic dual opamp was developed by Raytheon Semiconductors in 1974. J Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. ALESIS IO|26 CS5361 ALLEN&HEATH R16 AD CS5368 DA Burr-Brown PCM1404 Main I/O CS4271 APOGEE Ensemble The audio DACs are 24bit, 192kps WM8740s from Wolfson, used in conjunction with Burr Brown OPA2134 and Texas Instruments NE5532 operational amplifiers for the analogue, semi-balanced, DC-servo controlled, buffering and filtration circuits. Equivalent Input Noise Current vs Frequency Figure 3. The 2134's also draw nearly half the current as well (4mA vs 9mA), so it's actually kind of a winthat is if you have headphones that are power hungry. Rob, NE5532 is really a good OPAMP compared to many others. So did one of you did an upgrade one these as well? I think this will make a huge difference in sound quality, more than just swap the NE5532's. I would also consider the OPA2132 since it is more stable. 00008% but in my area I can't 26 Dec 2014Any other fans of the OPA2134 for its 'sound' quality? Yes the NE5532 has stood the test of time and is still a top notch dual op amp, although 27 Nov 2017 I'm looking for a replacement for the NE5532 (dual opamp), which can i have tested the opa2604 and the LME49720 compared to the ne5532. $2. But I will go on record as saying I agree with the video in that when you compare 4558 against another 4558 the differences are barely, if at all, audible. It had the typical TL072 Op-Amp, and I put in NE5532, and now find that the EQ sounds almost harsh. The OPA134, OPA2134 and OPA4134 have FET inputs, much lower distortion, very low noise and wide bandwidth for audio