Best opa604a opamp replacement?

[KLe]

Hi All

Just wondering if you could advise me on the best opa604a opamp replacement?

thanks

[KLe]

I believe that the AD-825 is a good replacement ... anybody know any others ...

[jcx]

as always ...it depends

if the cirucit takes advantage of the unusually high supply V capability of the 604 you may have difficulty finding any suitable replacement

[KLe]

Hi jcx
circuit voltage is +/-15VDC

[myhrrhleine]

Originally posted by KLe
Hi All

Just wondering if you could advise me on the best opa604a opamp replacement?

thanks

What is your criteria for 'best'
Low distortion?
low noise?
overall sound?
etc.

[KLe]

Originally posted by myhrrhleine
What is your criteria for 'best'
Low distortion?
low noise?
overall sound?
etc.

Hi myhrrhleine
Hi PSRR, low noise and overall sound, most probably, although I am really interested in what people consider to be their best alternative and why they think so.

I have looked at the AD825 and the Burson Audio Opamp, which also seems to be an excellent drop in replacements.

The PS requirement is +/- 15VDC. I am sure that there are many other alternates out there, so, I would love to hear your thoughts.

[PMA]

OPA627, OPA827, AD825, OPA134. To me, all of them sound better than the OPA604.

[KLe]

OPA627, OPA827, AD825, OPA134

Hi Pavel

Which one is your favourite or do you have another that you prefer?

thanks

[myhrrhleine]

Originally posted by PMA
OPA627, OPA827, AD825, OPA134. To me, all of them sound better than the OPA604.

I concur.
I think i'd go with the '827 if I could manage the package, otherwise the '134 would be my choice.
The '827 could also be a hf oscillation problem tho. The '134 would be better in that regard imo.

[YFW]

OPA627,Cello Pallette Pre use it.