NotInYourHead
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But it'd be pretty annoying I imagine, you expect 5532Well that's not too badI have used TL072 and they do a good job.
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Opamp fakes vs real vs audiophile
- Thread starter 0bs3rv3r
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- Thread Starter
- #62
But it'd be pretty annoying I imagine, you expect 5532
Thing is, I just bought a tube of five TL072 opamps from them. Haven't even tried them yet. I guess they might be just pieces of black plastic that do nothing.
- Thread Starter
- #63
Of course, if opamp rolling is silly, why even buy a Muses device, it won't sound any better.
but yeah.
RexrothPigeon
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Sokel
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As I don't understand the argument here, here we go:I woud not. But, many opamps cost a lot more than that, and that's why there is this huge market out there. Of course, it is for those who believe that you can hear a difference between a modern opamp and an old 5532.
Well that's not too bad
fake OPA 2134
real NE5532
The knock-offs around there are not rebranded, recycled or something.
They are plain rejected as bad, broken, or dead.
Keep them FAR from your gear.
OHtaru
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I once bought NJM5532 that was actually NJM4558.You'll be lucky if you get an actual NE5532. Lots of fakes I've seen are based on ancient opamps that are far inferior to the 5532 or not even audio opamps. Whatever has 8 legs is qualifed for "hi fever operational amplifer better than NE5532 OPA2064"
D
Deleted member 88295
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Bit tricky to solder but they work, sound great.
What is "high quality"? You dont always need the best specs It depends on the application. Sometimes high bandwidth is not a good thing. Thats why there are dozens of different opamps on the market, many designed for specific applications like driving multiple video cables.
Those are not as good as the NE5534s for audio unless you need a high impedance input (jfet) . And may not be ideal in a circuit designed for lower input impedance OAs like the 5534s .
- Thread Starter
- #70
Indeed, I bought them for when I design a circuit that needs a jfet input.
- Thread Starter
- #71
The application is an instrumentation amplifier
"An instrumentation amplifier (sometimes shorthanded as in-amp or InAmp) is a precision differential amplifier that has been outfitted with input buffer amplifiers, which eliminate the need for input impedance matching and thus make the amplifier particularly suitable for use in measurement and test equipment. Additional characteristics include very low DC offset, low drift, low noise, very high open-loop gain, very high common-mode rejection ratio, and very high input impedances. Instrumentation amplifiers are used where great accuracy and stability of the circuit both short- and long-term are required."
Again, it depends on the application. Analog devices makes over 50 OAs for instrumentation for a reason, there all designed for certain applications.
Apendix B
- Thread Starter
- #73
The point is that the AD828 would not be used at all if it wasn't quite a good opamp. I am quite sure this is why it has found it's way into, and gained a reputation in, audiophile circles.
J.M. Noble
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It's quite expensive ($11.54 qty. 1 in SOIC-8), so that puts it on audiophiles' radar for sure. Whether it makes an audible difference is another matter.
Which means nothing.
D
Deleted member 88295
Guest
I am convinced the opa2211 I bought, based on physical appearance and the way they sound turned out to be real. I paid 11 Euro for 10 pieces, how can they sell it for so low? In any case they are my best sounding op amps to date and the cheapest too. Before these I had bought some cheap opa1612 that were fake as can be (returned and got refunded) so I am surprised.
- Thread Starter
- #77
Well, I believe, that as well as fakes, they are dumping excess inventory very cheaply. Also, they might dump a batch that statistical testing has rejected from the production line. Doesn't mean they all are bad, and also doesn't mean sub-par chips don't still work well in some less demanding applications like audio.
solderdude
Grand Contributor
Why would/could op-amps have 'a sound' ?
- Thread Starter
- #79
I am not sure of the motivation for saying something like this. I accept that many disparage audiophile nonsense, but the statement still has something to say, which is literally that there is an audiophile market for them - and that ISN'T to say they are any better, or maybe even as good as, a 5532
- Thread Starter
- #80
I know where you are going with this, but we have differences in harmonics, and other distortion, measured (some posted in this thread). From playing around with DSP processing and adding harmonics in a controlled manner, I can guarantee it is possible to make a typical recording sound more pleasing to listen to, i.e. "better".
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