Friedrich Stockhammer wrote:
Am 26 Feb 2005 19:24:44 GMT schrieb Chung:
The 5532 is a superb audio opamp, so I am not sure why you would want to
replace it. Having said that, if you have fairly high source resistances
in your application, you can get a lower overall output noise by using
opamps with lower input current noise. The OPA134/2134/4134 from
TI/Burr-Brown are excellent. But I doubt very much if you can hear the
difference between those and the 5532. All these have very low
distortion even at 20KHz.
These question are not for replacement - I want this but I have not done
till today - in my old CD 650, but these OP's are for an new pre- and
headphone amp.


For preamps, my recommendations still hold. For headphone amps, you need
different parts and not simply opamps. Designing a low power headphone
amp for portable use, and designing for a home AC-powered application
have different trade-offs. You should check out the National LM4908.