Alternative Op Amps for the Orange Squeezer?

[audioguy]

What have you tried in your OS- OTHER than the 4558- and how did it sound?

Thanks!

Audioguy

[Mark Hammer]

Other than whatever inherent noise they have, changing op-amps ought not to make a huge difference.  Even so, the real thing you have to watch is amplilfication of incoming noise, not internally-generated noise.