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Original Message
non-inverting preamp w/schematic ...
Posted by deathtube 667 on June 15, 2017 at 16:57:41:
I got a non-inverting preamp built to the posted schematic.
Sort of like TK's preamp but with parts I had on hand.
The Zout @ 1k is about 7.5k ohms and there is a bit of a rising Z slope from 100HZ down.
I have short rca cable runs, so it does not seem to matter.
A larger uF output cap would lower the Zout and flatten the Z curve at lower Hz's.
You could remove the 4.7k isolation resistors if a subout is not needed.