Op-amps do vary a lot in sound, particularly because of the power delivery on-die and on-package. Some parts are power starved from the get-go and need a lot of decoupling capacitance very close. Others are designed well for power delivery and need very little decoupling cap. These tend to be more dynamic and clean-sounding. OPA627 is my personal favorite. Packaging also has a big effect.
Best sounding op-amp
I have a stock Music-Hall CD-25 that I'm planning on doing some 'easy' tweaks on. One of tweaks I had in mind was changing the op-amps. It currently has a pair of Burr-Brown OPA2134PA's, but I was curious if anyone had any experience/suggestions on other op-amps that might produce a little 'warmer' sound. Possibly considering one of the Analog Devices op-amps like the AD823 or AD827. Any feedback or recommendations would be appreciated.
thanks.
thanks.