Opa1612 vs opa2134 vs opa21 sound quality. The sound is much better but there's still something a bit "hi-fi" and "grey" in the presentation. Burson even has a headphone amp, the HA-100. Dec 17, 2018 · The unit is likely to sound best with the OPAMP the circuit was designed for. The AD826 seems to be smoother than the OPA in the voice range. Regrettably, but not surprisingly, no evidence is given to back up this assertion. 5mV vs 2mV, respectively). I don't care about listening tests or something else, just want to use the technical better one in my amp. The OPA1611 and OPA1612 offer rail-to-rail output swing to within 600 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range. 1 nV/√Hz at 1 kHz 1. Optical: How to Get the Best Audio Dec 22, 2016 · OPA2134 vs OPA2604 vs OPA2107. Audio Asylum - Tweakers' Asylum: Re: LM6172 vs OPA2134 vs OPA2604 by Tim Walpole - Tweaks for systems, rooms and Do It Yourself (DIY) help. (Opa2134 is not broken in at all, so it will most likely get better w/time) The base is much better from the 2134, but it does not seem to be as powerful on the output side, but could just be the break-in needed. Jan 11, 2016 · Yes sir. Coaxial vs. Is link a schematic, but the only one I can find isnt the best quality and needs to be zoomed in on. The TL072 is around a half inch rectangle with 8 legs going into a socket. I must test muses now. May 6, 2024 · Coaxial vs optical vs HDMI: which is the best audio . 3. Personally this is my favourite op-amp. Jan 6, 2010 · I have an Onix XCD-99 which is basically a Music Hall CD-25. OPA2134 OP amps. roland. Goggle bill d mod carver c-1. I expected less quality based on their reputation but found quality components. Great for piano/violin or metal / electric guitar. This is a straight-to-the-point review, so don’t expect a long, detailed review on the sound quality. An op amp is part of a larger circuit and is chosen because its specs match those required for the circuit. Find parameters, ordering and quality information Mar 14, 2010 · Overall balance with new amp is a little darker but with better transients. They'll say the OPA2134 "sounds dark" for example. I replaced my ad8610 I/Vs with ad 825s last night. Anther, When we used opa2134 or lm4562 to replace opa1612, the distortion disappear. Below picture is the Sch , and the distorted waveform is attached vedio. My understand if noise isn’t a problem the opa1656 is great alternative to the opa1612. Jan 10, 2016 · He talked to me about OPA1611's versus OPA134's as well as the OPA1612's versus OPA2134's. Poor design, poor IC = poor sound (or just the right junk sound) - poor design, great IC = poor sound. turpanic@gmail. aes. I have read somewhere that Audio-GD even made the first generation Burson opamps. My favorites at the moment opa1642 and this one opa1656. This made it a pretty minimalistic set-up to get a close view of the opamp differences. But now I have to replace them. I did not like it too much when listening to edm / electronic music. It has OPA2604 buffer amps that many have replaced with dual OPA627BP's with good results. Oct 23, 2005 · THS4062 vs 4032: 4062 is not in any way similar to (let alone better than) 4032 when we talk specs that matter to audio performance. 000. TI was going to discontinue the LM4562 and others as well. cfm?elib Aug 24, 2012 · xslavic. With this IC I can instantly tell the difference between good mastering/mixing tracks vs not so good and muddy. It's supposed to be a stright up replacement but it's about a third of the size. You better spend your money on a tube preamplifier because people say tube changes sound. 001 0. The input noise voltage is 8nV/√ Hz, almost twice that of the 5532. Try them and see for yourself. Mar 31, 2008 · OPA2134: When I replaced the OPA627 with the OPA2134 I found the music to be a bit uncomfortable to listen to. common mode voltage that I've measured on any op amp. OPA1612 is open sounding but is a little warmer possibly because of the lower midrange roundness. amp. Another parameter that I noticed was the voltage. Ultra-Low Distortion: With a distortion level of just 0. I've replaced the old TL082 in my active crossover with opa2134. Todays opa combo gave tighter bass, clearer vocals, more organic, better instrument separation across the board and more air in the highs. Jun 7, 2016 · Sound Quality Disclaimer: 1. It really does point out that the design sets the sound. The OPA2134 are ultra-low distortion, low-noise operational amplifiers fully specified for audio applications. The TL072 isn't great IMO. 1nV/√Hz Noise, Low THD and Precision. . The 8066 gives a more detailed presentation but can sound a bit course, particularly if you've lived with the silkiness and sweetness of the 2134 for a while. Sep 30, 2010 · G'day mate, yes it's a strange one, as the original OPA2134's in use sounded rather 'dry sounding' to me, if that makes any sense! In fact when the originals were first installed I remember thinking that they didn't sound as good at the LM833's in there previously! But these OPA2134's sound nothing like the original ones. Feb 11, 2021 · Even AD797 or OP627 cant hold a candle vs OPA1612 in terms of SQ - the difference is HUGE! My preamp sounds best with OPA1612 for gain and OPA2192 as buffer. Jun 18, 2019 · Which is better for sound quality? http://www. I like reducing noise in house wires. 3V inside of each supply. But deep bass and transients seem more punchy in the OPA2134. Jul 11, 2022 · I am wondering if there are certain parameters that will make popular opamps like NE5532, LM4562, TL072, OPA2134, and others, to give the best performance as far as THD and sound quality? When I studied datasheets for those opamps it seems that the lowest THD is achieved when R load is 2k. OPA1612-Q1 SoundPlus High-Performance, Bipolar-Input Apr 6, 2020 · The OPA2134 is very ordinary, I consider it a side step to the NE5532. I also have been an audio enthusiast for quite a while, having tinkered or created several guitar effects/amps. May 29, 2021 · The dark tone of the HD650 doesn’t go well with the Burson V5i-D. Could it be possible to replace the LF351N and LF353N with the OPA134 and OPA2134? I really wish I could get more info on this. Nov 9, 2010 · LM4562 / LME49720 / LME49860 - Do they sound different Apr 30, 2021 · Normally you'd regularily search in the manufacturers new product listings first for any new interesting products. Other Parts Discussed in Thread: OPA2134, LM4562. So far I don't hear any harsh sibilants (very clean) but it is virtue of my speakers. Superior Sound Quality: The OPA2134 is designed to deliver excellent sound quality, making it ideal for audio applications where fidelity is critical. Features of OPA2134 vs NE5532 . OPA2134 costs an arm and a leg. Paid access: http://www. For example, Aol for the OPA1656 with a 600 ohm load will have a linear output swing that is 1. The TI’s OPA1612 is a SoundPlus™ Audio Operational Amplifier with 1. Those are fine. help to check the reason. It was less "real", less "live" and less "musical" to my ears. OPA2134 gain stage with voltage series feedback. The completely docile op amps are the OPA2604, the OPA627, the OPA2107, the LM4562/LME49720 and the OPA2134. The V6 classic was a bit slower on the attack than the SS360x which gave it a bit smoothed over sound compared to the SS360x. If you want figure-of-authority-tested-and-likes-X kind of arguments, there's Douglas Self's series of books. Apr 2, 2009 · Hello, I just got interested in DIY stuff. Jun 3, 2013 · This probably isn’t the answer you want, but I’m going to present it to you anyway. Switching op amps is likely to cause as much harm as good. Apr 21, 2019 · vs Burson V6 Classic. Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. The OPA1611 and OPA1612 Apr 19, 2024 · Features of OPA2134. Oct 23, 2005 · If I would give 1 to 10 points regarding overall soud quality, the results would be like here: NE5534, BE4558, TL072, OPA2228, OPA2134, OPA2604, OP275 - each of them less than 5 points AD825 - 6 points and the unsurpassable winner is: THS4032 - 9 or 10 points It might be my own personal preference (but an other pair of ears said that it is The main difference between OPAx132 and OPAx134 is in DC precision of the high grade of OPAx2132P/U and OPA2134 (e. Its discrete opamp is built into the main board like some of Audio-GDs After over an hour of swapping OP Amps I came to a short May 30, 2014 · The values were initially fairly close, but tweaking made the performance significantly better. I was wondering if the OPA2604's could be replace with a dual opamp like the OPA1612 with similar or hopefully better results than the OPA627's Jul 29, 2002 · It is not an IC. It looks very similar to the Audio-GD and SPL Phonitor/Auditor opamp. I have always sought ways to do things better and easier so the power supply is a great example of this concept. It appears that the OPA1611/2 have a lower noise voltage, wider bandwidth and higher slew rate than the OPA134 and OPA2134's. 707dBc=0. Don't get me wrong. A true FET input stage is incorporated to provide superior sound quality and speed for exceptional audio performance. ah so much other untested opa's 1678 still on my list ina1620. Details are better on the SS360x while Bass may have had slightly better slam on the Classics. Can anyone suggest drop-in replacements to OPA2134? I'm looking for a natural, transparent sound vs colored. Jul 25, 2022 · MP3, AAC, WAV, FLAC: all the audio file formats explained The OPA1611 (single) and OPA1612 (dual) bipolar-1• Superior Sound Quality input operational amplifiers achieve very low • Ultralow Noise: 1. #2. 00001 VS = ±18 20 100 1k Frequency (Hz) 10k 20k 3 Des Datasheet OPA2134 Data Sheet PDF 1. 2013-06-30 1:38 pm. 6SL7 tube SRPP gain stage with voltage shunt feedback. The OPA2134 can sound positively lovely as long as you keep the load impedance resistive and above a few K. Nov 26, 2012 · for good info on guitar pickups' electrical parameters: UIUC Physics 498POM Guitar Pickup Measurements I doubt there is a lot better noise performance possible with the hi R pot as source the TL072 input noise V ~ 16 kOhm equivalent ~ 3 dB noise figure at higher source Z the V noise of the op amp is even less important and the noise figure can at best only asymptotically approach 0 dB Aug 28, 2024 · Best wireless earbuds in 2024 We would like to show you a description here but the site won’t allow us. A true FET input stage is incorporated to provide excellent sound quality and speed for exceptional audio performance. Seems to fit well. The sound came out "thick" and I could feel the artificially enlarged sound stage. It offers exceptional performance in almost any audio application. Though I use it only occasionally mostly for tests, and it has not operated more than a couple of hours summed, the right channel started to emit high frequency hiss noise time after time, without any special reason, even if nothing is connected to the input. g. Another way to say it: JFET OPamps like OPA2134 can replace most any other audio opamp Talking about AIYIMA A07, it will end up in a dustbin soon. May 9, 2023 · Hello together, i want to put one of the mentioned OP Amps in my amp. How are LME49860, LME49720 etc? Are they drop-in Mar 30, 2012 · I have a Crate VC508 guitar amplifier that many recommend modding by replacing the TL072CP opamp chip. Follow Us. All customized electronic components are with high quality and competitive price. group at Texas Instruments. i tryed lme49722 opa2134 and opa1612 , --. The OPA1656 immediately raised my attention, plus there was/is a long thread about it on diyaudio. I have no idea what the measurements are but the sound quality is very good. Overall, I find both opamps to be excellent, with the 8620 having a cleaner, more detailed and transparent sound, but on the lean/dry side (it's hard to describe this, but too much of this characteristic Mar 17, 2019 · The OPA1641 would be slightly better. The manufacturer claims it has superior sound quality, due to its JFET input stage. 2. I plan to get the brown dog adapters and try the opa 627's soon. Opa2134 is a very good opamp. com with a TI insider involved. The sound quality comes from the entire circuit, not the op amp. It has the most stable input capacitance vs. Posted by KanedaK (A) on December 22, 2016 at 16:38:35 . For one of the OP amp it's optimal with 1k and for the other one it's 2k. 0001 VS = ±16 THD+Noise (%) VS = ±17 0. My best guess is the RC4558P. Details were lost. The OPA1611 and OPA1612 Jul 4, 2009 · Here’s a great article comparing opa2156 CMO vs opa1612. 00008% • Low noise: 8 nV/√Hz Part Number: OPA1612 Other Parts Discussed in Thread: OPA2134, , OPA1678 Hi Community, TI!!! I would like to upgrade an audio amplifier OPA2134 and the TI site web recommands me to change for a new OPA. Language. These sound great and outshine many of the other modern high performance audio opamps out there today. Nov 2, 2010 · Try a pull-down load to the negative supply rail to force the NE5532 into class A, just a few mA will really make it sound better. Replacements: For the 5532 the opa2211A or opa1612 as well as LT1358. When we developed the OPA1656, this was also a major design target for us, and the designer and myself spent quite awhile in the lab with previous CMOS audio op amps (specifically OPA1652 and OPA1688) hunting for sources of input capacitance variation. Anyone tried TI version of this 2134 before May 6, 2022 · Opamp better than OPA2604 with big soundstage, and The OPA1611 (single) and OPA1612 (dual) bipolar-1• Superior Sound Quality input operational amplifiers achieve very low • Ultralow Noise: 1. I just thought using two opa627, i will achieve 2134's audio quality. AD826 used instead of the the OPA2134. 4 mA, max. For several reasons: Firstly I don't think that would be difference in sound quality. Since i couldnt find an opa2134, i just use tl072 and the likes for our projects I am just curious how opa2134's output performance. Nov 25, 2015 · LM4562 vs OPA2134 vs [ ? ] Apr 14, 2022 · There are some major differences between OPA2134 and TL072; for one, since OPA2134 has a unity-gain bandwidth of 8MHz vs 3MHz in the case of TL072, there is a significant difference in the typical quiescent current: 4mA vs 1. so far I note that the ad8610 seemed to go deeper in the bass and is a little warmer overall than the ad825. In comparison OPA1612 and OPA2134 also have a similar experience. 4032 is clearly better in the following areas: Settling time to 0,01%: 80ns vs 140ns for 4062; distorsion: -90dB vs -72 dB (that Aug 28, 2023 · LM4562 vs NE5532: What are Differences and How to Dec 31, 2010 · There are literally hundreds of audio opamps that self-recommend themselves for "high fidelity audio applications". 4. May 15, 2022 · LME49720 sound is boringand too light. The OPA1611 and OPA1612 Mar 17, 2019 · Rolling opa1642, opa1612, muses8920, 2xopa627bp, lme49720na, opa2134. \$\endgroup\$ – Jan 7, 2002 · Thanks for the reply though, I checked it out and noticed the comment on the OPA2604 needing more juice, so I checked out the spec sheet at TI, and it seems like it'll like anything from +/-15V to +/-24V, while the OPA2134 only likes up to +/-18V (pretty close to the -17V of my power suply), so I think I'll feel safer going with the OPA2604 regardless. It's quite funny how the diy audio crowd rave about the opamps marketed towards audio and shy away from the ones that aren't. The strings sound wonky and the vocals don’t sound that smooth. In other words, OPAx132PA and OPAx132UA (standard grades) are equivalent to OPAx134, which does NOT have a high grade. Mar 17, 2019 · Sound is cleaner comparing to OPA2134. ti. Im getting ready to use the same board and opamp in a Ten Tec Corsair Ham radio transceiver. 4062 is 180MHz vs 100MHz (4032); Slew Rate 400 vs 100V/us, but there the rally ends. It was recently re-capped and all new guts put in . 01 VO = 10Vrms RL = 2kW 0. I too find that the OPA1612 and OPA1642 are fantastic upgrade/replacements in a whole lot of professional and consumer audio gear out there equipped with comparatively outdated opamps. I've studied around in different forums and found information about differences between the resistor value going to ground. Oct 23, 2005 · I agree. Oct 8, 2017 · So I just blew up 5 Burr Brown OPA2134 due to bad labelling on the PCB (Ok I was also supposed to be more careful). Feb 11, 2021 · According to the TI datasheets OPA1612 has less noise than OPA1656. If LM4562 reduces noise leaking into house wires significantly, I may consider it a worthy investment. Even when it would it is really small and you can't say which is better. What else, maybe cleaner more resolved sound at congested parts. The OPA2604 and AD823 are both good too, how good are you at soldering SMDs? Jun 6, 2012 · 7 mA quiescent current is typical of the OPA627, for the OPA2132 it should be typ. Dec 6, 2018 · You can dig on the Internet and find modern op-amp test results, but it quickly crosses over into sonic character and subjective opinion. com/global/products/mobile Aug 13, 2014 · Touting sound quality in the datasheet makes it sound 300% better. Mar 9, 2023 · SMSL SU-10 vs M500 MKIII vs DO300 21 vs 9 vs 11 dual op-amps OPA1612 (accoring to the spec from smsl-audio) What is the Op-amps doing in that? M500 SINAD is higher than DO300 with less op-amps. org/e-lib/browse. Classics are a bit warmer while SS360x is a bit brighter presentation. However, for each of them, there are people who have tried it and consider that particular one to be the best of all op amps. Show hidden low quality content Chip Amps. I want to upgrade the current 4558 op-amps with better ones and the power switch supplied with the box with one with light. Both (I believe have Fet-inputs) There’s also 2189 CMOS audio op amp has impressive specs of an impressive was designed for MUX friendly DACs and multichannel dacs! Jan 7, 2021 · A more refined sound all round than the 2604/4562 combo. I used quality components throughout the build. This is based on my experience with the V5i-D. And this preamp sounds MUCH better than Audio Research, Burmester and Accuphase preamps costing above €10. Joined 2011. com +86-755-82524778. Dec 29, 2023 · I'm playing around with some simple headphone amps ( again ) with NE5532 vs. Feb 11, 2021 · The OPA2134 opamp The OPA2134 is a Burr-Brown product, the dual version of the OPA134. Share. Thanks in Feb 28, 2021 · The best sounding op amps for audio work. I'm not saying you wont hear a difference if you swap the opamp, but whether that difference is better is up to you but objectively the performance is likely to decrease if you replace the opamp, even with an apparently better performing one, if the circuit was designed for another device. Encuentre parámetros, información sobre pedidos y calidad Mar 11, 2003 · 1. OPA2134 SoundPlus™ Audio dual op-amp with low distortion, low noise and precision. Use a simple resistor, or a J-fet with the IDSS trimmed to 3mA~5mA. Oct 16, 2014 · OPA2134 replacing RC4136 How did the replacement work out ? Im getting ready to use the same board and opamp in a Ten Tec Corsair Ham radio transceiver. Have you found Mar 19, 2005 · I tested the opa2134 vs the ad712 that were stock. ••• Oct 23, 2005 · Maybe I should have added that my list was not meant as a suggestion of the kind that all those op amps are necessarily better. Oct 20, 2023 · Understanding Sample Rate, Bit Depth, and Bit Rate Jun 10, 2010 · From my experience these older OP/ OPA op amps all sound vaious degrees of "not-that-great" (cloudy, lacking details, taking away punch/immediateness). 8 mA, for the OPA2134 typ. the best sounding is OPA1612 ,not for driving headphones -low output current drive ,3ma current consumption. 5 mA. when we use opa1612 to translate difference input to single-ended output, the output is distorted, pls. I no nothing about this. FAQ . I did not get paid for saying something good or bad. Jun 8, 2023 · THD=-117. Dears . But the warmth in mid frequency (1k-4k) is gone. The OPA1611 and OPA1612 I'm playing around with some simple headphone amps ( again ) with NE5532 vs. This feature, in combination • Multimedia Audio • Active Filters • Preamplifiers • Integrators • Crossover Networks THD+Noise vs Frequency 0. I have a 1988 carver stereo per-amplifier. There have been audio op-amp distortion measurements and comparisons with double-blind listening tests. Jul 22, 2022 · Op-Amps 4558 vs TL072 vs OPA2134 vs 5532 vs LM741 Part Number: OPA2134 Other Parts Discussed in Thread: OPA1678, OPA1611, OPA1602, OPA1642. 1-nV/√Hz noise density with an ultralow distortion of • Ultralow Distortion: 0. Very nice combo indeed. But that does not say anything about the SQ. High resolution was lost. The ad825 seems to be more detailed alright. Tweakers' Asylum: Re: LM6172 vs OPA2134 vs OPA2604 by Tim Walpole Sep 14, 2021 · Of the op amps in my collection the massive misbehavers are the OPA1656, the LME49990 and the OPA1612. 000015% at 1 kHz. ••• More options. May 30, 2007 · If the orginal OP is a FET (like TL072, OPA2134 etc) we may be careful sometimes NOT possible to replace with Bipolar (like NE5532 etc). You can say I love the HD6X0 series only with tube Dec 18, 2002 · In general, I find the 2134 produces a slightly warmer, more musical sound, but masks some of the fine details which come through in the 8620. THD+Noise vs Frequency 3 Description The OPA134, OPA2134, and OPA4134 (OPAx134) series are ultra-low distortion, low-noise operational amplifiers fully specified for audio applications. Everything that I wrote here are “IMHO” and as is. 00008%, the OPA2134 ensures that audio signals remain clean and undistorted. Contact us for quotation. Member. The OPA1611 (single) and OPA1612 (dual) bipolar-1• Superior Sound Quality input operational amplifiers achieve very low • Ultralow Noise: 1. Part Number: OPA1656 Other Parts Discussed in Thread: OPA2134, OPA2604 The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. With proper decoupling the 5532 can sound pretty good. It's a killer OpAmp, and better suited to Jan 10, 2006 · I was impressed with the look inside. max Vos of 0. 4mA, respectively. Mar 17, 2019 · Hi everyone - wanted to take the opportunity on this thread to introduce myself, I am the engineer that is assuming John's old role as Audio systems engineer in the precision op. Aol Apr 1, 2012 · The LME49720 is pin for pin compatible for the OPA2134, the OPA's have the typical laid back Burr Brown sound. Anything other than these values and they're either fake or damaged (or both). When the original OP is Bipolar(like NE5532 etc) we can most always replace with FET or another similar Bipolar OP. LME49720 vs OPA1612 vs Nov 30, 2021 · Stability should be considered especially with the wider bandwidth of the OPA1656. Thank you, Dan ••• OPA1612 Dual OPA DIP8 (Unit) The OPA1611 (single) and OPA1612 (dual) bipolar-1• Superior Sound Quality input operational amplifiers achieve very low • Ultralow Noise: 1. Hi there probaly a simple question maybe not. The Features of OPA2134 • Superior Sound Quality • Ultra-Low Distortion: 0. OPA1612 de TI es Amplificador operacional de audio SoundPlus™ con ruido de 1,1nV/√Hz, baja THD y precisión. The images I post get fairly degraded. Now all the folks are using opa2134 op -amps as the replacement. The output swing for Aol should be considered as it is different between the two devices. Dec 26, 2019 · Proved inside BRZHIFI BZ1306 case (131*249*55mm). Mar 21, 2023 · Optical vs HDMI: Which Is Better? - Soundbar Oct 6, 2021 · RCA vs. I am curious to see if this impression changes over the week. OPA1612 sounds better than any transistor preamp I've ever heard and better then my own 6N6P 2 case -no barrels hold- 36kg monster preamp with a 100% double blind test win rate. Apr 11, 2024 · Both op-amps deliver exceptional audio quality, with the selection between the two depending on the specific requirements of the audio circuit and the desired balance between performance and cost. quite opposite actually :-) Anyway, I went looking for Burr-Brown OPA2134PA, but instead found Texas Instruments OPA2134PA on digikey (part# OPA2134PA-ND). The 49720 is more clinical IMO. com/product/OPA1642, the OPA1642 can be used fully diferential (balanced) to a studio monitor or amp, just like the OPA2134, but which has a better sound quality? the OPA1642 is in a Roland Mobile UA USB interface (https://www. The OPA1611 and OPA1612 Mar 22, 2022 · OPA1612 (soic on dil adapter board), bi-polar from input to output, again a very good opamp, which to me "sounds more balanced" top to bottom than the LME, it is just as dynamic, but just a little less obvious in the bass leading edge because the mid-range seems a little more fleshed out rich and full bodied, highs are just as good as the LME. 000130% Although the price was also cheap, It is a pity that NS was absorbed by TI and was abolished after losing the brand power competition with BB. Nov 8, 2006 · In Active crossover application, OPA2134 and OPA2604 The OPA1611 (single) and OPA1612 (dual) bipolar-1• Superior Sound Quality input operational amplifiers achieve very low • Ultralow Noise: 1. Feb 11, 2018 · Two cases were evalutated – in a Breeze Audio AK4495 based DAC, driving a ATHA5000 amp (listening via Beyer T1’s), and then driving a Grado RA1 clone (basically a CMOY circuit) to hear the amp character more closely through a set of Senn HD800. - Page 2 May 5, 2002 · ad825 vs ad8610 Hi Fmak, thanks for all the ongoing help. The OPA2134 is not harsh. The OPA 627 is well over price and is bass heavy and it’s not worth the price you pay for it The OPA1612 and OPA827 are much better than any of these but these are SOIC and you’ll need an adapter with experience soldering skills. The OPA1611 and OPA1612 I'm with Jim here. 1-nV/√ Hz noise density with an ultralow distortion of 0. So far it doesn't save me any money though. May 23, 2018 · Sorry I can't compare the sound of these opamps. I got a TI NE5532 off ebay. The combination sounds weird and off-putting, especially when it comes to the upper mids. So I can use any one of these ( one at a time !). com/product/OPA2134 OR http://www. 31MB The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. Other op amps you can try are AD823's but they can be a bit noisy when used at the inputs of a phono stage so I prefer them in the output stages. juqiawhiysdjortdoquhjadhoeqlyqmbyzmgqysoubfrrqnxzenshnnfe