Opa1642 vs opa2134. Aug 1, 2011 · Thanks b0ck3n, I didn't make Wednesday even in my time zone this time. A Nov 30, 2021 · OPA2134: OPA2134 VS OPA1656. Anything other than these values and they're either fake or damaged (or both). It is a really nice-sounding chip in the right place, but man it is expensive and you can get nearly there for a lot less in trouble as well Mar 7, 2019 · Sometime I use OPA1612, OPA1642 and OPA1622. พวก opa627 opa2134 muse01/02 muses8820 muses8920 lme49720 ne5532/34 มีอะไรอัพเดท ดีกว่าเบอร์พวกนี้ยังครับ เห็นเล่นกันมาเป็น10ปีแล้ว ฮาๆ Jan 15, 2020 · test_OPA1642 vs OPA2134. Sep 11, 2013 · ADA4627-1 is my current favorite sounding JFET op-amp, though it is single, not inexpensive, and would require a DIP adapter. diyAudio Community diyAudio Nov 8, 2006 · OPA2134 and OPA2604 are very close in data. Part Number: OPA1656. I've also seen examples of where someone removes a relatively slow op amp OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown™ Audio Operational Amplifiers 1 Features • Ultra-low noise: – Voltage noise: 2. It has the most stable input capacitance vs. OPA2134 is basic hi quality Op-Amp and all rounder Op-Amp with great sound. Dec 4, 2017 · Part Number: OPA1642 Other Parts Discussed in Thread: DIP-ADAPTER-EVM, OPA2134, RC4558, TL072. AD826 used instead of the the OPA2134. It needs an adapter though. I would tend to use the OPA1642 for buffering, filtering and EQ. Don't let power supply current limitations get in the way of performance. It is only SMD and requires the adapter boards (which is fairly trivial and has its own advantages), but appears to have specs closer to the 4562 EXCEPT that a) it is FET and b) its maximum frequency is 11Mhz instead of 55Mhz (compared to the OPA2134 with a maximum frequency of 8Mhz). Got these when they first released them b4 the acquisition of LME from National. . It offers exceptional performance in almost any audio application. Dec 6, 2018 · Tone controls? DAC reconstruction filter? The better FET-input op-amps are expensive because they are laser-trimmed and prices can be crazy. It's a better chip. Mar 17, 2019 · The OPA1641 would be slightly better. Depending on the actual application circuit, there are alternatives with better noise performance. 860. 9 nV/√Hz at 10 kHz Apr 30, 2007 · Originally Posted by mikeg88 /img/forum/go_quote. OPA2604 is one of the few op-amps having +24 -24 max supply voltage. Mar 22, 2022 · I’ve known about the OPA 1612 when they were 1st released. Last edited by mediatechnology; 30th November 2017 at 11:52 PM . These three Op-Amps sounds great. OPA2132 is not identical to OPA2134 " except offset" as Groner claimed. Jul 29, 2002 · Haha, in fact, it makes you wonder if a "better" opamp will yield just as much (or more) improvements over Burson. The OPA134, OPA2134, and OPA4134 (OPAx134) series are ultra-low distortion, low-noise operational amplifiers fully specified for audio applications. 00 : Crosstalk - 110dB PSRR - 80dB min, typ 100dB Distortion - 0. TL072 works most of the time but I almost always find a better substitute in dirt pedals. Go Down Pages 1. I have used the opa1642 as a replacement. For OPA1642, the output current (limit) appears to increase with increasing temperature. The OPA1642, SMT-only, is also a good dual BIFET. However it draws quite substantial current when idle. May 3, 2022 · I'd not use a JFET input opamp (OPA1642 is an example) to replace a BJT input opamp (NJM4580 is an example). The opa1678 looks like a better chip, as well and it's less than a buck. And without mentioning every op amp in existence, I'll close with I yet have to find a circuit where an NE5532 is the best possible option. So I can use any one of these ( one at a time !). 4" plug). Apr 1, 2012 · Howdy. OPA2604 is a little bit faster. 8 vs 1. The combination of high slew rate and wide bandwidth provide fast settling time. Prodigy 205 points. georgehifi. Easiest is to replace LF351N and LF353N for the OPA134 and OPA2134 just like the shop in Idaho did. User actions. It sounds swell but I have a set of the higher performance LMA49720NA DIP-8 opamps here on my desk and I'm wondering if they're plug-in compatible. Part Number: OPA1642 Other Parts Discussed in Thread: OPA1652. One good example is XU09 portable headphone amplifier. @JonSnell Electronic - perhaps you used Octopart to see Mouser's stock. They do sound differently on different type of loads and i'm not a golden ear. Similar Sound compared to OPA2134 but Bass is little better under control. That seemed like a reasonable target for the supply current of the OPA1656 as well. Any superior alternatives would be welcomed Products Precision op amps (Vos<1mV) INA1620 — High-fidelity audio operational amplifier with integrated thin-film resistors and EMI filtering OPA130 — Single, 1-MHz, 20-pA bias current, 530-µA power, FET operational amplifier OPA131 — Single, 4-MHz, 50-pA bias current, 750-µA power, FET operational amplifier OPA140 — Single-channel, 11-MHz, low-noise 36-V JFET precision operational Aug 24, 2012 · i tryed lme49722 opa2134 and opa1612 ,--. In a Cmoy, or other application, where the op amp is driving headphones directly nearly all of them are working under stressful conditions. OPA1642 is its replacement despite the lower type number. Jan 10, 2016 · He talked to me about OPA1611's versus OPA134's as well as the OPA1612's versus OPA2134's. 08 @ Mouser). I am fond of the bass response and warm tone of the 2134 in my existing designs, but the new application uses phantom power which is limited to a total of 10mA for the Oct 10, 2020 · I have also tried opa1642, 1612 and 2134, but they are all slightly inferior to lm4562 soundwise in Aiyima a04. I've only used it in a MINT, but I liked it substantially better than the 2132 and almost as much as the AD8620. 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. OPA2134 and NE5532 both have power supply currents of about 4mA per channel, and have been widely adopted in the market (understatement). Hi team, The following two sets of Output Voltage vs. Feb 11, 2021 · Below is a comparison between OPA1656 and OPA1642. But deep bass and transients seem more punchy in the OPA2134. According to the datasheets for both Feb 1, 2006 · OPA2134 is a far easier drop-in replacement for the TL072. consists of 2 x 10 op-amps in parallel and the two 10s are balance connected. Not sure a guitar effect could do it justice. The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. 1-nV/√ Hz noise density with an ultralow distortion of 0. Nov 25, 2015 · Im interested in op amp rolling for my amp since its not expensive to try out and I was surprised to find a lot of variation between them, the amp has a very simple circuit so my results could be more siginificant than with other amps. The OPA1642 in particular for me has proven to be very stable in a number of drop-in replacement situations. 4. Before any modifications I use shematics to see what i need to choose between these four Op-Amps. jpg. I can get an adapter for the OPA1642 or any other TI opamp that would suit the circuit. But $40-57 each. Hi Team, My customer wants to Jun 13, 2016 · ポータブルアンプのオペアンプ、オペレーションアンプの交換の実験です。なかなかオペアンプの聴き比べは手間がかかるもの、今回は安価な価格帯のオペアンプから、様々な聴き比べをしていきます。 May 15, 2022 · Buggle2 Riaa board. $´üé‡åáÝúÍ£ë#×wßW˜ÜnL¬Tm\ðõݧõÏw„pæþø«U W`‚ ù@ uŸT¹?MÜSWïêÄÕýÝ»?ÿÜW»za\{é>­ûdñ»û? The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications. Other Parts Discussed in Thread: OPA2134, OPA2604. Output Current characteristic curves seem to behave in opposite manners. Feb 11, 2021 · I agree about the OPA1612 for gain. If a FET-input amplifier is required for low bias current (such as for a phono preamp), you might consider the OPA1642 or OPA1678. Musician and DIY builder Expert in loudspeaker installation for optimal pace, rythm and dynamics Dec 3, 2018 · Something like the OPA1642 might work ok, but it's SMT only as far as I know. As long as your not using them for military purposes. Technical Expert. It's also overkill in the extreme. I would recommend OPA2134 or OPA134 and if you have money the OPA627 or OPA637. %PDF-1. 4 mA, max. If one has to use a FET input amplifier for audio in a non-inverting stage, this would be my first choice today. For an improved, general TL072 replacement, I would suggest the OPA1642. JFET inputs let you work with a larger range of input resistors. 4 %âãÏÓ 2 0 obj >stream xÚí=ÛŽ ·‘ïý ý à´y¿ 3Gš A ¬# û ìƒ µ e%9ò:0ò÷Ë;«Hv7ÏÌ8›Å*Îè ²É"«X7 «y¾¬t%î¿‹ÿЖ­ ù´~Iut•jS–¯:T óoëÝÝúÍ ¯¿{í ¾zµ>¼¾. 6SL7 tube SRPP gain stage with voltage shunt feedback. Besides a very simple simulation shows his invention very unstable . Feb 4, 2014 · OPA2132 and OPA2228 are really good sounding op-amps. The AD826 seems to be smoother than the OPA in the voice range. Another way to say it: JFET OPamps like OPA2134 can replace most any other audio opamp Aug 2, 2024 · The OPA1642 only 1. Two identical gain 11 amplifiers were tested. OPA2134 gain stage with voltage series feedback. At the risk of immediately coming across as exaggerated and/or hyped -- the "battle" was simply an epic slaughter! 高音質電源改善アクセサリーを中心に、音響を中心に電気で世の中に貢献しています。 Mar 17, 2019 · From the data sheet, in comparison to the OPA1642, I see that the OPA1656 has slightly less voltage noise but also slightly more current noise; slightly faster and less THD, but worse CMRR. 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. Eric Mo Intellectual 775 points Part Number: OPA2134 Other Parts Discussed in Thread: OPA1656, OPA134. The dual and quad versions feature completely independent circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven or overloaded. OPA2134 is more stable, as it is not too fast for Audio. 000015% at 1 kHz. --lme49722 lme4562 lm4562 opamp is very good sound ,higher ratings than opa2134 -but not as The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. The OPA827 for example has superior load drive,much lower distortion and miniscule DC offset. Tested a lot of OP, including LME49720, OPA1612, OPA1642, MUSES8920 and MUSES8820. The OPA1642, however, is also LESS expensive ($2. Measurewise there's not really a difference comparing OPA2134. Dec 17, 2014 · OPA2604 vs OPA2134 ? OPA2604 vs OPA2134 ? Started by nognow, December 17, 2014, 02:03:48 PM. LME49720 vs OPA1612 vs Muses02. Nov 26, 2017 · As mentioned previously the OPA2134 in BIFET is a decent performer. 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. 4mA), and its MAX draw is LESS than the 072. Edit: It is not always the best solution implementing the fastest OPAmp for I/V! Jun 19, 2021 · The OPA1642 has more open at the high frequency, it is more detail but it noticeable sharp and edgy sound. Mar 17, 2019 · 3. OPA1642 sucks 1. Joined Apr 6, 2018 Messages 11,090 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). 8 mA, for the OPA2134 typ. The article was another late night "rush job". I can't trust a guy claiming unmeasurable -180db thd for his " famous" op amp. Oct 11, 2001 · I really like the 2604. 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. Although many people dismiss the NE5532 as an obsolete component and try to locate a replacement, the NE5532 is still adequate for most applications. I used to have a comparison written up between the 2132 and 2604, but I don't know where it is anymore. the best sounding is OPA1612 ,not for driving headphones -low output current drive ,3ma current consumption ---then opa2134 the best all around as preamplifier it can be used at high gain 6-10 times,very good sounding and Musical,good for biassing in class A. I know there are a lot of factors that set these apart, but I'm writing to ask what difference the amp modules make. nognow. Nov 9, 2012 · Muses02 vs BB OPA2134 in Topping A30 (single-ended to differential buffer) Rig includes: Topping A30 and D30, HD600s (vintage 2017) with HD650 (genuine Sennheiser replacement part) 3m cable (1. 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 Other Parts Discussed in Thread: TLE2082, TLE2062, OPA2134, OPA1652, OPA1654, OPA1642, OPA1644, LM833 I need to source a replacement for 2 2134 op amps in a new preamp design. 5 mA. OPA1664 is in stock at Mouser as a BJT input opamp replacement. It is difficult to say which one is better. My Technics SU-V9 is having relay issues, and needs a recap, and possible opamp change. Apr 18, 2010 · Thanks Jack I can hear a difference I will be getting some of the 2134's in my Nashville 1000 here soon. ナチュラルビューティー。脚色がほとんどない、いわば素肌美人である。音の抜けが良く、ジャンルを問わず使える感じ。超高域の解放感はもう一歩か。でも、充分リファレンス用途までいける。単価も音質の割に破格と言っていいだろう。 And if they were offered in a DIP package, I think a whole new and large target market would emerge for you and would be absolutely worth your investment in the tooling and fabrication. Print. Downside is they are SMD only. Jan 7, 2020 · If you don't mind adapters, the smd version of the opa2134 is cheaper. ••• OPA2134 is probably a good choice in general. Details; Discussions; Posts; The OPA1641, OPA1642, and OPA1644 series of operational amplifiers are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions. The currenty is AN6552. I have a phono preamp board with three socketed DIP-8 OPA2134 in it. Hello, I have on hand 3 OPA1642s. 2. Mar 11, 2003 · 1. The OPA132, OPA2132, and OPA4132 (OPAx132) series of FET-input operational amplifiers provides high speed and excellent dc performance. Every amp. I don't like OPA2134 much, so something like AD8620 would have been another good comparison to Burson. Nov 10, 2006 · The OPA1642 is not a 'cheap' amplifier, but it is very clean, and seems to behave well, even in a non-inverting application. 8ma quiescent current per channel - half as much as OPA2134,OPA1656 is the best boise performer now, but there many different purposes with different requirements. A quick snapshot of the OPA1656 performance specs: Mar 20, 2018 · Tested the OPA1642 for the I/V of D10. OPA2134 is good but it consumes more power than normal (8 to 10 mA per IC) and it is not rail to rail output. +Gain Bandwidth. 3. common mode voltage that I've measured on any op amp. Jul 22, 2022 · OPA2134 is great for buffer and clean applications but I never liked it for overdrive/distortion. Last edited by J3RK on Tue Dec 04, 2018 3:58 pm, edited 1 time in total. I would say it depends on what circuit. In fact, dual OPA627 on Browndogs would have been something to consider as well. If you have an account with TI, the OPA 1612 can still be ordered as samples. The OPA1641, OPA1642, and OPA1644 rail-to-rail output swing allows increased headroom, making these devices ideal for use in any audio circuit. When the original OP is Bipolar(like NE5532 etc) we can most always replace with FET or another similar Bipolar OP. It appears that the OPA1611/2 have a lower noise voltage, wider bandwidth and higher slew rate than the OPA134 and OPA2134's. gif Okay so I've been comparing the micro stack, ultra micro stack and the basic desktop amps. SIY Grand Contributor. OPA1642 also sounds decent, is reasonably priced, and would also require a DIP adapter. The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications. _____ A couple of guitars Nashville 1000 Fender Mustang III Boss Katana MKII 50 Jun 6, 2012 · 7 mA quiescent current is typical of the OPA627, for the OPA2132 it should be typ. 28 times as much (1. 6 KB · Views: 130 Last edited: Dec 19, 2023. Same with the OPA627 though. Using hd600s and 400is to test them Ive compared the Dec 26, 2013 · I was asking about the OPA1642 vs the OPA2134. A question for opamp gurus. It may or may not sound at all noticeably better than a TL072, it depends on the circuit and application. 为增加其声音的胆味和醇厚绵密的味道，输出端还特别增加了一枚ti新构架的场效应jfet音频专用的发烧运放opa1642，该运放的信噪比极高，毫无底噪！一点都没有！非常的好！喜欢夜里听的人必须的！ The OPA1641, OPA1642, and OPA1644 series of operational amplifiers are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions. Mar 25, 2022 · Conclusion of OPA2134 VS NE5532 The OPA2134 is a Fet Input op-amp, while the NE5532 is a Bipolar Input op-amp. The OPA1642 is considered an "upgraded" OPA2134, with slightly better specifications all-around, so if you don't want to worry about whether the transformer is up to snuff, they are ideal. This is how I got a set of these including OPA1642 and OPA827. Feb 28, 2021 · The new breed of TI J-Fet opamps offer superior performance to that old soldier the OPA2134. Previous topic - Next topic. Jun 18, 2019 · Excuse me, it's not the OPA1642, it's the TPA6120A2 vs OPA2134, which one is better for audio, which has better quality, thanks. Products Precision op amps (Vos<1mV) INA1620 — High-fidelity audio operational amplifier with integrated thin-film resistors and EMI filtering OPA130 — Single, 1-MHz, 20-pA bias current, 530-µA power, FET operational amplifier OPA131 — Single, 4-MHz, 50-pA bias current, 750-µA power, FET operational amplifier OPA140 — Single-channel, 11-MHz, low-noise 36-V JFET precision operational opa2134. qfsvg ejawh xje xzmrg dcgziq vtvaa vgefy ztys hah ublt