Opa1656 vs opa2134 reddit Great for guitar fuzz boxes. I guess what puts me in a dilemma is that Burr Brown branding behind the well known OPA2134 vs. Rolling opa1642, opa1612, muses8920, 2xopa627bp, lme49720na, opa2134. Chip Amps. Or check it out in the app stores If you get an opamps within the specs of the original one and it's an updated one like opa1656 opa1692 etc then having newer tech is always fun and as many can attest sound better. Don’t hesitate. I've tried the lme49720 on a few dac and had the sameish experience as you. The OPA1656 is a high-voltage CMOS with the lowest voltage noise in the industry. It has the most stable input capacitance vs. Reddit's original DIY Audio subreddit to discuss speaker and amplifier projects of I have an OPA1656 story that may be interesting especially to whomever wants to build the RIAA preamp example in the apps section of the data sheet. Reddit's Loudest and Most In-Tune Community of Bassists Electric, acoustic, upright, and otherwise. If a FET-input amplifier is required for low bias Part Number: OPA1656 Other Parts Discussed in Thread: OPA2134, OPA2604. OPA2134 is probably a good choice in general. OPA2134 is more used and more liked, than almost any other JFET op ( Maybe still TL072 is most used, but it is far from OPA2134 in quality )-----OPA2134 is probably the most used DIY Audio op, all categories. Don't let power supply current limitations get in the way of performance. I'm also ordering OPA2134 opamps to replace the NE5532's that are stock. Those are fine. Audio, Audio, Audio! Amplifiers, Phono preamp, and Analog The quick answer to your question is: No. I can't comment necessarily on the sound comparison. Community resources, and extensive FAQ for players new and old. the OPA627, the OPA2107, the LM4562/LME49720 and the OPA2134. The OPA1641 would be slightly better. the O2 dScope measurements that NwAvGuy posted. Long-winded question for anybody is what’s the diff between these two groups of op amps that allows for such Compare using a fet opamp, opa1656 vs a opa2134, I see little reason why one would choose a opa2134 for a new design, maybe that's why TI asks so much 🙂 because they want you to use the new tech, but it's probably the cost of the mfg process for that tech vs the new processes. If a FET-input amplifier is required for low bias current (such as for a phono preamp), you might consider the OPA1642 or OPA1678. It offers exceptional For this use Xduoo said "OPA's used on the RCA circuit is OPA2604, it is better than OPA2134. I like opamp rolling, but the dac x6 opamp socket is for the i/v section of the dac and the power supply is very limit(3 parallel icl7660 generating a negative rail for the tpa6120+op275 and the opa2134). The OPA1688 even beats it on noise. Two cases were evalutated – in a I prefered the sound of my DAC with the OPA1656's hands down even over the discrete op-amps. Normally you'd regularily search in the manufacturers new product listings first for any new interesting products. 77K subscribers in the diyaudio community. OPA1642 is its replacement despite the lower type number. It works with no problems. Depending on the actual application circuit, there are alternatives with better noise performance. That seemed like a reasonable target for the supply current of the OPA1656 as well. A quick snapshot of the OPA1656 performance specs: Haha, in fact, it makes you wonder if a "better" opamp will yield just as much (or more) improvements over Burson. Home. Forums. Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. i have a a07(tpa3255 also) with 48v 7. OPA2134 and NE5532 both have power supply currents of about 4mA per channel, and have been widely adopted in the market (understatement). 5amp psu and opamps rolled from NE5532(people say they are fake anyways) to OPA1656. The OP1656 is the exact Below is a comparison between OPA1656 and OPA1642. In order to answer this question, we need to learn a bit more about the intended use. Another way to say it: JFET OPamps like OPA2134 can replace most any other audio opamp I have to say that this opamp has a very well input stage symmetry which is better than opa1612, opa2156, opa1656, ADA4898, and many-many other opamps 3-4x more expensive. Theme - Light; depends on the amp your using fosi makes a ton , assuming its the TB10D (upgraded version) with a tpa3255 it will just give you headroom that most people wont need. com with a TI insider involved. That seemed like a Swapped the Op Amp in my cheap Pyle phono pre to a OPA2134 and am really impressed in the difference. If a person can hear a difference in electronic circuits, there are tests that can easily measure that difference. By the way, Victor recently switched from LM4562 to OPA1656 because it has even less THD. Opa2134 isn't a bad opamp, but I don't like if in lpf sections. Members Online. Facebook X (Twitter) LinkedIn Reddit Pinterest Personally, I like the ne5532 with the cs4398(about the same detail level as the opa2134 subjectively but smoother sounding in my opinion). just going by specs it should be better but i dont hear much, its def louder tho so if I would recommend OPA2134 or OPA134 and if you have money the OPA627 or OPA637. The OPA1656 immediately raised my attention, plus there was/is a long thread about it on diyaudio. It is an interesting fact. The data sheet for the OPA1656 says (on the front page, I only skim read it) that it can drive 100 mA, is low noise (2. 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). When the original OP is Bipolar(like NE5532 etc) we can most always replace with FET or another similar Bipolar OP. 8 mV 0. OPA137 — Single, 36-V, 1-MHz operational amplifier with rail-to-rail input to V+ OPA141 SoundPlus™ 8-MHz, 5-pA, High Performance Audio Operational Amplifiers with FET inputs OPA2134 I had the chance to gather up a selection of opamps from my parts bin, including BB OPA2604, OPA637, AD823, LME49860, JR4556, Muses8820 and 8920, and compare them against each other along with a Burson V6 Classic (thanks to them for sending me an evaluation). But even there sometimes a TL072IP or even RC4558 can be sufficient and much cheaper without any difference. Yes, there are tiny differences in the specs but you'd need extensive test equipment to be able to measure the difference. This device is ideal for low and high impedance applications, such as a high gain microphone pre-amplifier, due to the low voltage and current noise. If all you need to do is power the op amp, hook 30V to V+, gnd to V-, and you're done - the op amp has no concept of gnd outside of V-, so it doesn't matter if it's 15V and -15V or 30V and 0V. Avoid LME49720– fr some reason, it disables the subout of the A07- incompatible circuitry most likely. Every amp. Each part has its specific specs tailored for the application. Noise is almost same as with LM4562 and there are no problems with distortion. the TI's LME49860, LME49720. In fact, dual OPA627 on Browndogs would have been something to consider as well. AskEngineers is a forum for questions about the technologies, standards, and processes used to design & build these systems, as well as for questions about the engineering profession and its many disciplines. OPA2134 (DIP, Black trace) +2. Amplifiers. The OPA2134 is a fast-ish opamp, and can't handle long or high inductance power supply connections. 3. If a bipolar-input amplifier can be used, then you might consider Engineers apply the knowledge of math & science to design and manufacture maintainable systems used to solve specific problems. The third time I added in njm4585 very cheap but pretty good opamp in the comparison. common mode voltage that I've measured on any op amp. Two identical gain 11 amplifiers were tested. 0025% AD8599 (SOIC, Orange trace) +12. If I'd imagine, the njm4585 is a tiny little sticky sounding in the highs and less clean. FET on the OPA1688, but strangely it is actually higher at 10nV/sqrt(Hz). The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. And opa1656 and opa1612 doesn't sound any different. The voltage noise figure for the NJM4556A *should* be lower, being bipolar input vs. (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. Opa2604 is slightly warmer. Audio, Audio, Audio! Amplifiers, Phono preamp, and Analog Audio Review. TBH I don't really ever notice much difference in audio between most opamps unless they I tested the opa2134 vs the ad712 that were stock. This may cause instability in some second-order filter designs. 4/+0. The OPA1656 is a newer device with better typical room temperature specifications in regards to the following: Stability Dry, crisp, analytical and non-intrusive (as compared to the bold NE5532) is what I would describe this opamp as. I see a lot of Chinese HiFi gear put in the opa2134 or TI’s OPA1656 is a SoundPlus™ ultra-low noise and distortion, Burr-Brown™ audio operational amplifier. 7 mV 0. " The opamps are only used to convert the RCA Single-Ended inputs into a OPA2134 is more stable, as it is not too fast for Audio. Maybe someone will disagree with me but it seems to be an excellent choice for your application. Most of my experience with the listed op amps is from dirt pedals anyway. That is about it for now. There is basically no difference between njm4585 opa1612 and opa1656. It is has good qualities and very all-round LM4562, OPA2134, MUSES8820, NJR4580DD & JRC5532DD- are all cheap enough to experiment w/. Forum Style OPA1656 vs. It OPA2134 and NE5532 both have power supply currents of about 4mA per channel, and have been widely adopted in the market (understatement). OPA2134. I don't like OPA2134 much, so something like AD8620 would have been another good comparison to Burson. The NE5532 is used everywhere as its sound profile is designed to catch people's attention. 9/+8. 0032% Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. I couldn't tell the difference between the Topping and the Marantz's internal DAC. Audio, Audio, Audio! Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. . I was just curious what people's thoughts were for that opamp, and if they had any other preferences in terms of quality? I've been using Both devices are very popular and great for audio. OPA2134 as a phono preamp? I know it's a really quiet FET opamp, but it's usually recommended to use bipolar input amps OPA2134 is probably a good choice in general. I plan to get the brown dog adapters and try the opa 627's soon. My pref is to upgrade opamps in the pre/DAC stages as that output section will have the biggest influence in sound char. May I suggest the OPA1656 as a possible substitute to the tried and tested LM4562? Just found a space to test AIYIMA A07 with OPA2134 opamp. 9 nV / √Hz is pretty good), has a gain bandwidth product of 53 MHz, slew rate 24 V/us, and input offset of 1 mV max. It sounds somewhat better with wider soundstage and better bass with stereo and instrument separation. The test procedures/instruments industry has a far more than adequate portfolio of tests. Or check it out in the app stores I've used OPA2134 (TL072) and TLE2074 (TL074) in some builds, you don't really want the better quality parts if you want clipping and distortion. Graph is single supply voltage follower. •Avoid input values below 4 V to prevent degraded VIO that results in an apparent gain greater than 1. I've been doing a bit of filtering with an OPA2134. OPA2134 Drop-in replacement. My favorites at the moment opa1642 and this one opa1656. Any q’s. Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. Well, if I was imaging all those above, then i was. consists of 2 x 10 op-amps in parallel and the two 10s are OPA2134 is good but it consumes more power than normal (8 to 10 mA per IC) and it is not rail to rail output. I don't care about listening tests or something else, just want to use the technical better one in my amp. And the differences to the cheap FiiO were very subtle. Gallery Archive Articles. diyAudio Community diyAudio Store. If you exchange the opamps you won't be able to hear the difference. Home Get the Reddit app Scan this QR code to download the app now. The opa2134 already installed is neutralish/slighty bassy. ah so much other untested opa's 1678 still on my list ina1620. Will it harm the rest of the amplifier? Get the Reddit app Scan this QR code to download the app now. Second, you are likely to damage the amplifier boards if you attempt to change them out. The OPA2134 doesn't have a specific ground input, just a V+ and V-. It also depends on the use case to use it. It performs admirably in virtually all audio applications. The THD+N of the 1688 should be better too, best I can tell comparing the datasheet graphs vs. It's a For the very small differences likely to be heard between well chosen op-amps, your memory will start to fade in 10 seconds. A lot of guitarists I've been playing with recently have been If you have an electronic circuit design or repair question, we're good; but if this this a general question about electric motors, motor capacitors, fans, servos, actuators, generators, solenoids, electromagnets, using motor drivers, stepper For low noise and transparency, I'd try the OP275, OPA2134, NE5532 etc. 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 85 votes, 23 comments. A while ago I compared a FiiO D03K (€20 DAC) vs a Topping E30 II (150€) vs the internal DAC on a Marantz CD-Player. It will oscillate at a high frequency, and (though inaudible because of the high frequency) will distort audio in a very atonal way. fkcwi opxbti ods ajowzn bjdi uuho fozb jedcy phqjl ceb