- Opa1612 vs opa1642 sound quality 2021. OPA1612 is open sounding but is a little warmer possibly because of the lower midrange roundness. 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. This is based on my experience with the V5i-D. 000. OPA2134 is basic hi quality Op-Amp and all rounder Op-Amp with great sound. 8 mA per channel. Oct 15, 2014 · Texas Instruments' OPA1612 (dual) bipolar-input operational amplifier achieves very low 1. My favorites at the moment opa1642 and this one opa1656. (NOTE: We once owned a recording studio together back in the late 1970's through the early 1980's. Apr 25, 2024 · The OPA1642 has much lower current noise and better 1/f noise than the OPA1656. 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. Features include 5. Feb 11, 2021 · According to the TI datasheets OPA1612 has less noise than OPA1656. 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. The OPA1611 and OPA1612 Sam, Kai, I realize looking back at my answer above that I worded it a little poorly. 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. 000015% at 1kHz. We would like to show you a description here but the site won’t allow us. In this case, because of the way the circuit is designed, the voltage and current noise of the op amp itself effectively appear inside the feedback loop, and so should be corrected for by the op amp's loop gain itself (at least until the op amp runs out of loop gain at high frequency). Currently, I require opamps in the DIP package. Jan 10, 2016 · I talked yesterday to my buddy Greg B. The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. MUSES8820 is the best, IMHO. Just check the rails aren't over +/-18V. 1-nV/√ Hz noise density with an ultralow distortion of 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. It occurred to me that a more modern & higher performing part must exist at a lower price - a win-win scenario if ever there was one. For the case of Jul 5, 2006 · Don't mean to be ungrateful but OPA2107 seems to be an easier option now especially still not sure how others rate the sound quality of OPA1642. The OPA1602 and OPA1604 series of op amps offer rail-to-rail output swing to within 600mV with 2kΩ load, which increases headroom and maximizes dynamic range. 00005% at 1 kHz Feb 17, 2023 · The OPA1622 is a slow device compared to the OPA1612/OPA1656. 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. com In no case did I have too high expectations regarding the sound The OPA1641, OPA1642, and OPA1644 rail-to-rail output swing allows increased headroom, making these devices ideal for use in any audio circuit. common mode voltage that I've measured on any op amp. I did not get paid for saying something good or bad. 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 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. 5nV/√ Hz noise density with an ultralow distortion of 0. 3nV/rtHz) and distortion (-124dB), wide bandwidth (22MHz) audio op amp. ) He talked to me about OPA1611's versus OPA134's as well as the OPA1612's versus OPA2134's. Apr 5, 2021 · The original amp has the OPA1656 and the other has the OPA1642. 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. One S300iu integrated amplifier | Stereophile. What else, maybe cleaner more resolved sound at congested parts. May 15, 2022 · Buggle2 Riaa board. 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. Jun 7, 2016 · Sound Quality Disclaimer: 1. The OPA1611 (single) and OPA1612 (dual) bipolar-1• Superior Sound Quality input operational amplifiers achieve very low • Ultralow Noise: 1. It ensures a very low noise density of 1. The OPA1611 and OPA1612 The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. 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. 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 We would like to show you a description here but the site won’t allow us. Jul 4, 2021 · This doesn't look like a high quality pcb and it would be easy to lift traces. 5-nV/√ Hz noise density with an ultra-low distortion of 0. Other Parts Discussed in Thread: OPA1612, OPA1642, RC4136 I use these amplifiers for pro audio. 005% covering the whole audio spectrum, Surprisingly those with higher THD as much as 0. 00005% at 1 kHz. TL074 is easily surpassed by OPA1644, that's a no-brainer. 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. 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. 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. 05% sounded way much better. But that does not say anything about the SQ. 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 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. 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. The OPA1652 (dual) and OPA1654 (quad) FET-input operational amplifiers achieve a low 4. Mar 7, 2019 · Sometime I use OPA1612, OPA1642 and OPA1622. From what I know the OPA1656 is currently the highest-spec audio grade standard opamp that TI offers. One good example is XU09 portable headphone amplifier. Regards, Richard Last edited: 2010-01-18 4:37 pm May 19, 2004 · If you're looking for an opamp substitution, I'd try OPA1642 to replace OPA2604. Dec 6, 2018 · This question is triggered by a repair I recently did where the originals, while still available, were stupid expensive. You really don't want a tl072 dealing with 20mA into such low impedances. I love details clarity, soundstage - listen to rock classical and vocals. This feature, in combination 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 The OPA1602 and OPA1604 bipolar-input operational amplifiers achieve very low 2. 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). 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. The OPA827 for example has superior load drive,much lower distortion and miniscule DC offset. Both fet based opamps sounds a little bit more solid in the bass (not quantity but the imaging and the texture). It appears that the May 3, 2022 · OPA1612 on paper has lower voltage noise but whether its lower noise in practice depends on the circuit impedances. 1 nV/√Hz noise density with an ultra-low distortion of 0. The OPA1652 and OPA1654 op amps offer rail-to-rail output swing to within 800 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range. May 9, 2023 · Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. For high source impedance sensors such as a phono cartridge lower current noise is better. 1-nV/√Hz as well as an extremely low distortion level of 0. I also refurbish large format recording consoles. amp. The OPA1612 offers rail-to-rail output swing to within 600 mV with a 2 kΩ load, which increases headroom and maximizes dynamic range. 00005% at 1 kHz The OPA1611 (single) and OPA1612 (dual) bipolar-1• Superior Sound Quality input operational amplifiers achieve very low • Ultralow Noise: 1. 00003% at 1kHz. 00 : Crosstalk - 110dB PSRR - 80dB min, typ 100dB Distortion - 0. who builds large PA speaker systems. tnt-audio. May 23, 2018 · The first time I did test with opa1642 opa2156 (precision opamp version of opa1656) opa1612. Feb 28, 2021 · The new breed of TI J-Fet opamps offer superior performance to that old soldier the OPA2134. com 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. The OPA1642 has more open at the high frequency, it is more detail but it noticeable sharp and edgy sound. 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. The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications. And this preamp sounds MUCH better than Audio Research, Burmester and Accuphase preamps costing above €10. OPA1656 sounded worst, Muses 8920 sounded best. I got free shipping with Element14 till 29th of this month The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. Before any modifications I use shematics to see what i need to choose between these four Op-Amps. It measures better to, with LM4562, but the difference is much smaller than the sound differences. 1-nV/√Hz noise density with an ultralow distortion of • Ultralow Distortion: 0. edit: looking closer at the pics, the I/V resistors are 390R (about half the datasheet values, which makes sense as they // the outputs). More options 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. ah so much other untested opa's 1678 still on my list ina1620. The OPA1611 and OPA1612 The OPA1602 and OPA1604 bipolar-input operational amplifiers achieve very low 2. 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. Find parameters, ordering and quality information 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. The OPA1641, OPA1642, and OPA1644 rail-to-rail output swing allows increased headroom, making these devices ideal for use in any audio circuit. This is a straight-to-the-point review, so don’t expect a long, detailed review on the sound quality. Tested a lot of OP, including LME49720, OPA1612, OPA1642, MUSES8920 and MUSES8820. But I really like the FET's in that position. It has the most stable input capacitance vs. Jun 5, 2023 · Although specifications of OPA1612 (bipolar) indicate they are superior to that of OPA1642 (JFET inputs) in practice OPA1642 performs slightly better. 1 nV/√Hz at 1 kHz 1. Opa1642 sounds a bit smoother and silky at top end but a little bit fat in the mids. 000015% at 1 kHz. 2. 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 · Yes, some times noise add a little bit of spark to the sound making it more beautiful to our ears, i have tested power Amplifiers with THD+N at 0. A true FET input stage is incorporated to provide excellent sound quality and speed for exceptional audio performance. 00005% at 1 kHz 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. Mar 17, 2019 · Rolling opa1642, opa1612, muses8920, 2xopa627bp, lme49720na, opa2134. 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 The OPA1641, OPA1642, and OPA1644 rail-to-rail output swing allows increased headroom, making these devices ideal for use in any audio circuit. Mar 14, 2010 · Overall balance with new amp is a little darker but with better transients. I have a Technics MASH cd player with the SMDs type of opamps needed. Strange but found too many times to ignore it. Jul 25, 2016 · Hello all My Marantz and most of my CD players have the LM4562 which I find is great. These three Op-Amps sounds great. Mar 17, 2019 · We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). Everything that I wrote here are “IMHO” and as is. So far I don't hear any harsh sibilants (very clean) but it is virtue of my speakers. group at Texas Instruments. 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. ••• 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 can easily compair them , one with NE5532 and the other with LM 4562. 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 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 TI’s OPA1662 is a Dual SoundPlus™ low noise (3. 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. This cheap op-amp is the most natural sounding op-amp compare to the bright sounding OPA1642. 00005%), a low input bias current of 2 pA, and low quiescent current of 1. IMHO the outcome was mostly decided by how the opamps responded to the RF coming out of the dac chip. 1 nV/√Hz at 1 kHz • Ultralow Distortion: 0. Also the OPA1612 does have the highest quiescent over the other opamps we're talking about it will be the hottest. I don't care about listening tests or something else, just want to use the technical better one in my amp. I also have been an audio enthusiast for quite a while, having tinkered or created several guitar effects/amps. Mar 17, 2019 · The OPA1641 would be slightly better. Jun 19, 2021 · I change the op-amp with the very popular NE5532P and I am quite surprise for the result. It might require more capacitance in the LPF of the I/V stage to keep it happy Vs the others. 1-nV/√ Hz noise, low THD+N (0. 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. Last edited: 2023-06-06 6:15 am 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. Jul 30, 2021 · If I could also request test of: OPA1642 ~ 2 Euro OPA1656 ~ 2. uewfw juhflsnu iybo lmhbz msa fyio bca mhet bdcul dzxvt