Your probably right. The front end is more important than the opamp.
What's wrong with the 3906? Noise?
TL072 won't drive 600 ohms, right?
I can post the rest of the schematic, but it is not proven (to me at least) so .......
Could I use a couple of zeners in place of that middle transistor in the current source?
Jeez, anybody ever get carpel tunnel from these darn mouses? Or is it mice?
here's a 1.8 mb pdf hype sheet
What's wrong with the 3906? Noise?
TL072 won't drive 600 ohms, right?
I can post the rest of the schematic, but it is not proven (to me at least) so .......
Could I use a couple of zeners in place of that middle transistor in the current source?
Jeez, anybody ever get carpel tunnel from these darn mouses? Or is it mice?
here's a 1.8 mb pdf hype sheet