OPA2134 vs. TL072

[jksuperstar]

The OPA2134 (and OPA4134) coming from Burr-Brown have some really nice slew rates (20 vs. 15V/us), noise rejection (120db vs 70-80db), lower offset, much closer to rail outputs, etc. Has anyone had any problems using these as generic drop-in replacements for TL074, LF444, etc? Power might be a little more, but I'm looking at using these in all of my DIY modules to raise headroom (since I like lots of bass and lots of percussive transients).

Is there any thing to worry about before pulling the trigger on buying these? I know they are more expensive, but I figure if it adds maybe $2 to the cost of a module, that's in the noise considering how much everything else costs!

[StephenGiles]

Have you got hissing in your ears yet? I have, so I always use any opamp I have. Selective bad hearing can come in handy!!

[johans121]

[jksuperstar]

Thanks Jim, from what I hear, it looks like there's no problem, and going through the effort of a full DIY modular, I'd like to do it right, ONCE. Seems like even if there's some modules that have problems or need some tuning, it's worth going for the OPA's over the TL opamps.

[julianw]

When I swapped out a crappy opamp in a synsonics drum machine for an OPA2134 the increase in detail was staggering, makes me want to change all the audio opamps in my modular, it was definately worth the effort.

[mistercooper]

Remember, sometimes bad slew rate is a design consideration and better opamps could yield unpredictable results.

[tommi]

I used an OPA2604 for my drum modules mixer. I think that have been a good replacement for the TL074. Maybe the tl074 are worse than opa2604 at least for summing stages.
I can't tell the difference because I 've never made a test changing the ic and hearing. But i can say that it's working as it should.

[johans121]

[State Machine]