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Opa1612 vs opa1642 sound quality forum
Opa1612 vs opa1642 sound quality forum. Mar 17, 2019 · We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). but the difference between opa2604 and LME49720 is much smaller than the difference between these two compared to the original ne5532. Before any modifications I use shematics to see what i need to choose between these four Op-Amps. When I do serious listening test between them, just an A - B testing, not back and forth, I found the OPA1642 creates more noise at upper frequency because of those high frequency details. OPA2134 is basic hi quality Op-Amp and all rounder Op-Amp with great sound. 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. I love details clarity, soundstage - listen to rock classical and vocals. Aug 3, 2019 · The OPA1642 is the best choice that you can make other than incredibly expensive ones that provide very, very, slightly less noise and higher distortion. Old op-amps such as the LF412 and TL072 are more than good enough for 99% of audio applications. Strange but found too many times to ignore it. But I really like the FET's in that position. May 6, 2022 · Lets take a look at the NE5532 op-amp, used in audio products everywhere since 1979 and it costs about a $1. 1 nV/√ Hz at 1 kHz; Ultralow Distortion: 0. You can also try OPA1612 as buffer with OPA2822 for the headphone driver. 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. I can easily compair them , one with NE5532 and the other with LM 4562. May 23, 2018 · The first time I did test with opa1642 opa2156 (precision opamp version of opa1656) opa1612. I no nothing about this. It offers exceptional performance in almost any audio application. Feb 28, 2021 · The new breed of TI J-Fet opamps offer superior performance to that old soldier the OPA2134. Low output current would mean the transimpedance gain of the I/V circuit will be high, and the input current noise of the op amp will be a significant contributor. The OPA1642 has the JFET input stage- thus reducing the input current noise- reduced common mode input distortion and sensitivity to source impedances, and lower standing current going for Jun 7, 2016 · Sound Quality Disclaimer: 1. And this preamp sounds MUCH better than Audio Research, Burmester and Accuphase preamps costing above €10. 1 nV/√Hz at 1 kHz 1. 3V inside of each supply. You really don't want a tl072 dealing with 20mA into such low impedances. Close to zero DC mv at its output would enable removal of the dreaded electrolytic coupling caps which will definitely lower colouration and improve sound quality. The output swing for Aol should be considered as it is different between the two devices. Features include 5. All the amplification stages are based on top-quality audio op-amps such as Texas Instruments' OPA1642 for the phono stage and OPA1612 for the Line Feb 11, 2021 · I think the problem I'm seeing with the OPA2156, and to a lesser extent the OPA1656 is that the 1/f knee for the noise is much higher than for the OPA1612 and OPA1642. Mar 17, 2019 · Rolling opa1642, opa1612, muses8920, 2xopa627bp, lme49720na, opa2134. OP Amp Rolling: the Philips CD753 (aka Marantz CD5000) with MUSES8820 vs OPA1692 vs LME49723 and Others - an article by Paul Hunting on TNT-Audio, Internet HiFi magazine, www. My favorites at the moment opa1642 and this one opa1656. The current noise paired with high source impedance translates into additional voltage noise on the input and this gets amplified by the gain in the design. 5 Euro OP275 ~ 3 Euro OPA1612 ~ 6 Euro According to specs I would think the OPA1642 would be one of the best compromises cost vs performance wise. Therefore distortion and or noise tend to be higher than for OPA1612. One S300iu integrated amplifier | Stereophile. 00 : Crosstalk - 110dB PSRR - 80dB min, typ 100dB Distortion - 0. Jun 5, 2023 · The OPA1642 is significantly inferior to the OPA1612 in many regards (GPW product, output drive, distortion vs output load, input voltage noise for example). For high source impedance sensors such as a phono cartridge lower current noise is better. Nov 30, 2021 · Stability should be considered especially with the wider bandwidth of the OPA1656. More options Jun 19, 2021 · The OPA1642 has more open at the high frequency, it is more detail but it noticeable sharp and edgy sound. It will allow you to stream your music with ease while enjoying excellent sound quality, all controlled via a high-quality LCD screen and an ergonomic interface or from a dedicated mobile application. 00005% at 1 kHz. Only really better substitution for NJM4580 for example as Pre-Amp can be no less then OPA2228 or even better OPA1612, but for that -3dB less noise (and distortion) over whole audio spectrum you will have to play premium extra. Dec 9, 2019 · Home: RME ADI-2 Pro FS R BE—Neumann KH80 DSP, Arendal Sound 1723 1S Work from Home: JDS Labs Atom—Etymotic ER4SR, AKG K371, Sennheiser HD820 Measurement: Earthworks M30 (Reed R8090)—Earthworks ZDT 1021 — RME ADI-2 Pro FS R BE — REW Jan 10, 2016 · I talked yesterday to my buddy Greg B. Jun 5, 2023 · Although specifications of OPA1612 (bipolar) indicate they are superior to that of OPA1642 (JFET inputs) in practice OPA1642 performs slightly better. MUSES8820 is the best, IMHO. Jun 18, 2019 · Hello everyone, I have the DAC Emotiva XDA-1 preamp with the DAC Analog Devices AD1955 and Burr Brown OPA-2134 op-amps, I want to update to the Burson Audio Play with the DAC: ESS Technology SABRE32 / ESS9018 and NE5532 X 3, NE554 X 2 op-amps, would it be a good update to the Burson Audio? thank you very much to all. OPA1656 tends to have thin bass in comparison to OPA1612. com In no case did I have too high expectations regarding the sound Mar 17, 2019 · The OPA1641 would be slightly better. Jul 5, 2006 · Personally I prefer LM4562, OPA2228 and OPA1612 over OPA1642 because of the input noise that makes it sound less pristine. Both fet based opamps sounds a little bit more solid in the bass (not quantity but the imaging and the texture). 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. 1 nV/√Hz at 1 kHz • Ultralow Distortion: 0. Dec 10, 2015 · A fair question! And although I was the product definer and systems lead for this part, I don't get 100% control over the marketing folks But, I can honestly say that when we started working on this part about a year ago, I was very adamant that I didn't want to create a part with excellent specs but terrible sound quality in the real world. the ne5532 looks a bit harder, narrower and more direct, the other two a bit more relaxed and May 3, 2023 · Focusing on a practical, hands-on perspective, George Ntanavaras, details the design and construction of a phono preamplifier for Moving Magnet (MM) cartridges and a Line/Headphone amplifier with two additional inputs and volume control. Hi there probaly a simple question maybe not. This is a straight-to-the-point review, so don’t expect a long, detailed review on the sound quality. I personally decided a few years back, that it was time for me to get rid of all ICs and sound coupling caps in my signal chain. 1-nV/√Hz as well as an extremely low distortion level of 0. tnt-audio. You can try swapping opamps to find the least bad sound, that's about it. 3nV/rtHz) and distortion (-124dB), wide bandwidth (22MHz) audio op amp. 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. ••• Nov 26, 2017 · thanks for your tips! i have tested the opa2604 and the LME49720 compared to the ne5532. 2. A true FET input stage is incorporated to provide excellent sound quality and speed for exceptional audio performance. The OPA1611 and OPA1612 Apr 5, 2021 · The original amp has the OPA1656 and the other has the OPA1642. ah so much other untested opa's 1678 still on my list ina1620. But, this is only If I have to modify something that comes with very old OPAmps. Feb 11, 2021 · According to the TI datasheets OPA1612 has less noise than OPA1656. What else, maybe cleaner more resolved sound at congested parts. This combination will sound slightly more clinical than the OPA2228/OPA2822 combination 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. Hello, I am looking at replacing the old JRC opamp in my phonostage of my amplifier. The OPA827 for example has superior load drive,much lower distortion and miniscule DC offset. edit: looking closer at the pics, the I/V resistors are 390R (about half the datasheet values, which makes sense as they // the outputs). 00005% at 1 kHz OPA1641, OPA1642, OPA1644 SBOS484D –DECEMBER 2009–REVISED APRIL 2016 OPA164x SoundPlus™ High-Performance, JFET-Input Audio Operational Amplifiers 1 1 Features 1• Superior Sound Quality • True JFET Input Operational Amplifier With Low Input Bias Current • Low Noise: 5. The OPA1642 is also theoretically the best choice for the unity and x2 stages in the output buffer, although the LME49720 is a very close second. Any futher recommendations? my favs 1642/1656, 1612, lme49720na 2xopa627bp, ••• The TI OPA1612 dual operational amplifier benefits from excellent technical characteristics, allowing very good electrical and audio performance. These three Op-Amps sounds great. 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. For example, Aol for the OPA1656 with a 600 ohm load will have a linear output swing that is 1. who builds large PA speaker systems. The NJM4560DX does not appear to be FET type, though I thought a FET type like OPA1642 would suit this circuit? or maybe OPA1612 which isnt FET like the Jul 4, 2021 · This doesn't look like a high quality pcb and it would be easy to lift traces. OPA1612 is open sounding but is a little warmer possibly because of the lower midrange roundness. Opa1642 sounds a bit smoother and silky at top end but a little bit fat in the mids. (NOTE: We once owned a recording studio together back in the late 1970's through the early 1980's. This feature, in combination The OPA1611 (single) and OPA1612 (dual) bipolar-1• Superior Sound Quality input operational amplifiers achieve very low • Ultralow Noise: 1. Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. Sorry. I have a 1988 carver stereo per-amplifier. It appears that the Part Number: OPA1642 Other Parts Discussed in Thread: OPA1612, , OPA1652, OPA1688, OPA1662, OPA1602. 00005% at 1 kHz Oct 10, 2020 · In the case of Aiyima a04 ( I have two of them ) it is very clear that the sound quality gets better with LM 4562 instead of NE5532. ••• May 9, 2023 · Hello together, i want to put one of the mentioned OP Amps in my amp. The OPA1641, OPA1642, and OPA1644 rail-to-rail output swing allows increased headroom, making these devices ideal for use in any audio circuit. May 19, 2004 · If you're looking for an opamp substitution, I'd try OPA1642 to replace OPA2604. OPA1641, OPA1642, OPA1644 SBOS484D –DECEMBER 2009–REVISED APRIL 2016 OPA164x SoundPlus™ High-Performance, JFET-Input Audio Operational Amplifiers 1 1 Features 1• Superior Sound Quality • True JFET Input Operational Amplifier With Low Input Bias Current • Low Noise: 5. Mar 14, 2010 · Overall balance with new amp is a little darker but with better transients. Feb 4, 2014 · Ti and others do have interest to make them at the same level as its primary production line of OPA class IC-s. Aol Feb 17, 2023 · Also, most opamps can't handle the RF coming out of dac outputs. The amp Apr 25, 2024 · The OPA1642 has much lower current noise and better 1/f noise than the OPA1656. Find parameters, ordering and quality information OPA1641, OPA1642, OPA1644 SBOS484D –DECEMBER 2009–REVISED APRIL 2016 OPA164x SoundPlus™ High-Performance, JFET-Input Audio Operational Amplifiers 1 1 Features 1• Superior Sound Quality • True JFET Input Operational Amplifier With Low Input Bias Current • Low Noise: 5. It ensures a very low noise density of 1. From what I know the OPA1656 is currently the highest-spec audio grade standard opamp that TI offers. Jul 30, 2021 · If I could also request test of: OPA1642 ~ 2 Euro OPA1656 ~ 2. TL074 is easily surpassed by OPA1644, that's a no-brainer. Tested a lot of OP, including LME49720, OPA1612, OPA1642, MUSES8920 and MUSES8820. 1-nV/√Hz noise density with an ultralow distortion of • Ultralow Distortion: 0. 004% @20KHz The above parameters are insignificant to the audio level variations imposed by substandard audio recordings, room modes and compromised loudspeaker placements in the average home, some of these variations could May 3, 2022 · OPA1612 on paper has lower voltage noise but whether its lower noise in practice depends on the circuit impedances. Thanks in Superior Sound Quality; True JFET Input Operational Amplifier With Low Input Bias Current; Low Noise: 5. Feb 11, 2021 · The next op-amp I am planning to try is the OPA1612 but perhaps the DAC is the limiting factor and perhaps the measurements will look very similar to the OPA2134 even if the OPA1612 is a really good op-amp. IMHO the outcome was mostly decided by how the opamps responded to the RF coming out of the dac chip. It was recently re-capped and all new guts put in . Just check the rails aren't over +/-18V. com We would like to show you a description here but the site won’t allow us. 然而这一切都是源自于取样时钟基准的高精度和高稳定度性。 传统CD机通常是用一枚石英晶体振荡器配合相应的时基分频处理电路来组成解码需要的时序电路，这样的电路优点是简单稳定，但时序的一致性并不理想，频率的飘移性和精确性不能保证最佳，从而可能导致较大的jitter（时基抖动）失真 Feb 4, 2014 · Stunning. The OPA1642 is “one step down” but still very highly rated, and it is JFET-input which should give a low enough DC-offset to be used directly in this kind of application. It measures better to, with LM4562, but the difference is much smaller than the sound differences. The higher current drive of the OPA2822 would be beneficial. 00005%), a low input bias current of 2 pA, and low quiescent current of 1. Currently, I require opamps in the DIP package. 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. 000015% at 1 kHz. But that does not say anything about the SQ. 1-nV/√ Hz noise, low THD+N (0. Goggle bill d mod carver c-1. 000. Now all the folks are using opa2134 op -amps as the replacement. These days the likes of OPA1642 / OPA1612 are routinely used, so I leave those alone. ) He talked to me about OPA1611's versus OPA134's as well as the OPA1612's versus OPA2134's. Dec 6, 2018 · Just replace the original op-amp with one with a similar specification, if it's not possible to find an exact replacement. May 15, 2022 · Buggle2 Riaa board. One good example is XU09 portable headphone amplifier. Other Parts Discussed in Thread: OPA1612, OPA1642, RC4136 I use these amplifiers for pro audio. Everything that I wrote here are “IMHO” and as is. For the case of Mar 17, 2019 · It's not always systematic, but in this case: OPA: Op Amp (or grandpa in German ) 16: Audio 5: CMOS Process technology (OPA1652 is CMOS, so I figured I would put my CMOS audio developments here) 6: Next numbers up after the OPA1652/54 family, that leaves OPA1655/56/57 for single/dual/quad of the new device In the case of precision amplifiers Jul 25, 2016 · Hello all My Marantz and most of my CD players have the LM4562 which I find is great. 1-nV/√ Hz noise density with an ultralow distortion of 0. 00005% at 1 kHz 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. I have a Technics MASH cd player with the SMDs type of opamps needed. OPA1656 sounded worst, Muses 8920 sounded best. The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. 000015% at 1kHz. I did not get paid for saying something good or bad. We would like to show you a description here but the site won’t allow us. I also refurbish large format recording consoles. I don't care about listening tests or something else, just want to use the technical better one in my amp. Is the 2134 the right choice. I got free shipping with Element14 till 29th of this month The OPA1611 (single) and OPA1612 (dual) bipolar-1• Superior Sound Quality input operational amplifiers achieve very low • Ultralow Noise: 1. The OPA1611 and OPA1612 DMP-A6 Master Edition Eversolo A New Epoch Is Beginning. Mar 17, 2019 · For a DAC chip with a low output current, I would suggest op amps with FET type inputs, either JFETs or CMOS. Last edited: 2023-06-06 6:15 am Jul 5, 2006 · Hi All, Please advise what would be the best bet for a modern replacement of the NJM353 in my 12-15 years old vintage 4X60W Class A Zero Feedback car amplifier? Tried dual OPA627AU on adaptor but the sound is of reduced volume, of loss details and PCB is warmer than before and the noob in me did not realized the input current of 7mA X 2 or 14mA for the each of 4 dual adaptor as compared to OPA1641, OPA1642, OPA1644 SBOS484D –DECEMBER 2009–REVISED APRIL 2016 OPA164x SoundPlus™ High-Performance, JFET-Input Audio Operational Amplifiers 1 1 Features 1• Superior Sound Quality • True JFET Input Operational Amplifier With Low Input Bias Current • Low Noise: 5. This is based on my experience with the V5i-D. IOW, there is no opamp swap fix for a bad layout. the differences aren't huge, but big enough to make a change worthwhile. common mode voltage that I've measured on any op amp. Feb 11, 2021 · looks very similar to the eighth image from post #2 of Bel Canto's S300i/S300iu - driven by dual mono Icepower amplifier modules with switch mode power supply - go to Inside the Bel Canto S300i integrated amplifier | Audiokarma Home Audio Stereo Discussion Forums and Bel Canto e. So far I don't hear any harsh sibilants (very clean) but it is virtue of my speakers. 00005% at 1 kHz The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications. 1/f corners: OPA1612 ---- 10 Hz OPA1642 ---- 20 Hz OPA1656 ---- 1 kHz OPA2162 ---- 1 kHz It also looks like the OPA1642 and OPA2162 are not happy driving 600 ohms, but the TI’s OPA1662 is a Dual SoundPlus™ low noise (3. 8 mA per channel. Eversolo presents with its DMP-A6 MASTER EDITION a streamer as powerful as it is intuitive and stylish. It has the most stable input capacitance vs. Mar 7, 2019 · Sometime I use OPA1612, OPA1642 and OPA1622.
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