[sdiy] low noise opamp for audio circuitry?

[Ian Fritz]

At 10:19 AM 10/26/2008, Dan Snazelle wrote:

>Sitting here testing a preamp circuit (so i can plug guitar and vocal into 
>my modular).FIRST i was using a TL074. when i listened to the output, and 
>turned up my speakers, I heard a distinct hissing. (even with input turned 
>down.)
>
>i WAS testing on +/- 9v battery for safety reasons. maybe the 74 doesnt 
>like 9v.
>
>Then i tried an LF444 and all 95% of the hiss went away.
>
>But i have a feeling i can do better still.
>
>SO---what are some good, low noise opamps (in a 4 way package?)

I've used OPA2227 (dual). For a quad, LT1125 looks pretty good from the 
spec sheet.

   Ian