borges said:That looks like a nice place to start! However, I would probably drop the passive filter and opamp after the follower. Do you know if the follower itself has the ability to drive a line output?
Borge
I am intending to use only the "SLCF" part of the circuit on Pedja's site, as I think the filter was found necessary for the amplifier chip.
The output impedance of a simple source follower is is approximately 1/gm, or about 40 ohms for a2SK170, which is pretty low in this context .
Alex