Any regulated +/-12Vdc to +/-15Vdc supply can be used. Rod Elliot's P05 design and PCB would work great, but I may end up making my own boards.

It's based on the LM317 and LM337 adjustable regulators. These are said to work better, with lower noise and better regulation than the LM7815/LM7915 fixed regulators. I don't think it really matters for this application; the fixed regulators would work fine, and are easier to assemble on perfboard point to point than the adjustable ones. ...

Forgot to cite my main resources in the first post.

http://sound.westhost.com

http://sound.westhost.com/project88.htm

http://sound.westhost.com/project01.htm

I'm getting a lot of help with the circuit here:

http://www.diyaudio.com/forums/chip-...ed-preamp.html

Now, the circuit has changed a bit overnight. The output coupling cap has returned, the order of buffer > vol control > ...

A lot of the details I'm using in this project are from *Rod Elliots P88 preamp. I would just use his design and PCB but i don't care for his layout with the switches in the middle of the board for gain selection. Nifty for a prototype project, but not for a finished piece in my opinion.

Since I'm not using his board I decided I'd change the design a bit. These type of circuits are nothing new, and you could find everything I'm doing in a basic electronics textbook. Simple or not, ...