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Great video.

OPA 2132 .. totally. HiFi.

Great video! Thanks, and please do more comparisons.. 2604, etc.

Congratulations per this video 🎉 Mate can you make another video like this showing the response of frequency of the best op amps of the market like Burson V7 Vivid, Sparkos and Stacato ?

Es sutil el el cambio...

NE 5532 IS MUTCH SMOOTH AND CLEAN

My favorite has always been and likely still is OPA637... but kinda a pain to use in places.

Fantastic work! 😉👍

Good video 👍

Your audio is too quiet. Cannot hear you properly above a normal road outside. Can hear everyone else on youtube fine. Ipad pro maxed out.

Просто запусти тест rmaa несколько раз (для уменьшения погрешности) на каждом усилителе. Сжатие ютуб всё нивелирует, никакой разницы нет.

Really, a very, very nice video. Thank you.

What a bunch of crap...

Voce só vai ouvir diferenca mesmo quando comparar um st tl072c com um texas lf353p voce nao vai acreditar na enorme diferença

Scale matters! 1:10 ... Measuring the 4558 at 12db of gain (voltage gain of 4) against the 5532 at 0 gain is not a realistic comparison.

TL072 might be just a touch softer, however it seems to have more ringing.

For me the JRC 4558D has the best sound, for me the most natural and dynamic sound. I have listen to this in a acoustic treated room with expensive studio monitor.

It simply depends on the design application. Replacing an op amp is more likely to add distortion as the Equipment you have is designed around the opamp inside. Most people don't have enough electronic knowledge to do this. Every mixing desk in the audio chain has gone through hundreds of NE5532. So you put in an unsuitable JFet OPamp in a little box in your living room, you hear some high frequency noise and think it sounds better because you paid more for it, Unless you can test an improvement you are probably making things worse. Plenty of High End audio use Philips / Signetics NE5532 because they are perfect for audio,

1:11 These graphs are totally made up. Here it shows the NE5532 with 0dB gain at 30Hz (the left-hand portion of the graph, why not 20Hz like True Audiophiles would want ...), but the JRC4558 has a gain of over 12dB. These would have to be in different circuits for this to be true, so it's clearly not a valid comparison. Sorry, folks, you need to learn a minimum amount about electronics to have a clue what's true and what's not.

We're also at the mercy of the you-tube compression algorithm.

Great video, i am glad to have purchased several 5532DD

You mean the open loop freqeuncy response, of course. And what about the slew rate and the noise shae... However to my hifi experience, NE5532 with reasonable negative feedback is fully transparent in the audio band.

I wouldn't even use the 80s Op Amps as an offset servo anymore.

Thank you for this valuable comparison... Nice Rock part

OPA 2132

Interesting thing to do. Other possible comparisons: 1. Sweep a sine wave from say 100 Hz to 7K Hz - much further outside that passband won't come through well on most devices people might be using to watch the video. 2. Do the same but run the left channel through dry and the right through the test opamp. 3. Do the same with left and right having different opamps. 4. Set up a comb filter and sweep its fundamental as above - vary by using odd, even, and random harmonics. Although square waves or triangle waves are rich in harmonics, the controlled overtones of a comb filter reveal a lot more intreguing spectral relationships. Be forewarned though: if you're as much of an audio geek as I think you are :) ) you'll be mezmerized by the sound - and wake up realizing several hours just vanished. Nice work. Hope you do more!

JRC4558 is very old opamp, and prefix JRC means nothing, it is a just generic 4558 opamp, afaik... ))

Excellent video! You present the same set of op amps I was researching, and you gave frequency response curves, a multitude of music genre, and an artistic, professional presentation! I've watched this video probably a half dozen times because of it's content as well as presentation.

I'm not familiar with audio electronics. Comparing different chips without mentioning the circuit they are used in is confusing to me. The frequency response of the amplifier changes based on the applied feedback. Is it some kind of standard circuit? I'm sure you're not using the opamps in open-loop configuration.

TL072 sounds more sterile than source but much better than JRC072D

Is there something wrong with your voice? You sound like you're laboring.

With what im using to listen to this (Laptop with headphones, probably crapy signalpath) i can't hear any differences between4558D and 4558D NOS. But, will relisten to all your clips with better audio gear. Thankyou for sharing. This is really exciting. // Frank

To my ears the TL072 "sings" more in the upper register. so the harmonics stand out. In the ARP section when the OP-AMP sounds, the sound feels like it has some phaseshift. Is it the roundtrip delay?. Love theese kinds of videos. Im just someone who loves working with sound.

To my ears the TL072 "sings" more in the upper register. so the harmonics stand out. In the ARP section when the OP-AMP sounds, the sound feels like it has some phaseshift. Is it the roundtrip delay?. Love theese kinds of videos. Im just someone who loves working with sound.

This is really interesting. Thank you!

Thank you for this video.

How about for active low pass filter sir whic opamp is the best? Thank you

Your TL072 is fake, so it's not correct test

Wow both sound like shit compared to the source. My console is full of JRC072D’s. I wish they were all socketed…

I prefer NE5532 . Piano is extremely demanding to reproduce (NE5532 has EXCELLENT but not fatiguing "attack") and I have the track (in "Day dreaming" CD) so I have "a reference" without YT compression, to compare. I also quite often use LM4562. Much faster than NE5532 and much more capable to drive "more current demanding loads" but also no "fatiguing sound" at all.

Interesting Video. But there come some Questions in my mind. Isn't it also a matter of the Design around these Opamps? Arent's these different Input types, like Fet (OPA2132), JFET (TL 072), Biplar BJT (NE5532) CMOS (OPA1656). Arent there different input resistances between these opamps? Don't have some internal Frequency compensated, and some need external compensation? Is it a good idea just to switch an opamp in a circuit between these types? Couldn't it be, that they won't work properly?

Such chips have 2 parts only ( the middle part and the end one). It need to add J-FET 2SK170 before such chips as like Quad preamp has. Full 3parted chips - are as like AD8051, NE5534 etc

thank you very much!

here the new one wins over the old one if the signal strength was the same. The new one plays more clearly with silibants 

less air, the scene is worse, but the original is always better, the more elements in the audio track, the worse 

4558 clearly plays higher and is more tight than tl72

a darker and smaller stage does not play as wide

Personaly i use 2068DD as replacement for various older low cost opamps in vintage audio gear. Its pretty universal and easy to implement. However,of equal importance are the passive parts surrounding it. Some more modern opamps are clearly better when it comes to noise and THD,but in practice its not worth the investment in most cases. Anyway only opamp rolling doesnt do the trick in most cases.

Very underrated channel.. great work brother, keep these vids coming..

OPA 2132 👍