• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Mini amp using 12AU7's as power tubes?

I want to build a stereo "mini amp" using a 12AU7's as the power tubes. I'd like this to be an OTL design (just to save space), but PP is okay. I was thinking of using a 12AX7 as the preamp tube, and a 12AT7 as the driver for the 12AU7. Has anyone ever seen a design for this type of amp? Maybe I just have to start breadboarding the circuit to see how things sound. It doesn't have to be high power, <=1W is okay.

Any tips for a design would be greatly appreciated as I've never designed an amp before.

Thanks
Glenn
 
Thanks Andy and Tom! I'll read that thread.
I was trying to keep everything to 9 pin tube types, so I won't be using a 6SN7 but the idea is good.
I should have mentioned that I'll be using SS rectification (to save space).
I'm going to try and lay out a design using the design guides for the tubes I mentioned (12AX7, 12AT7, 12AU7).
Thanks for the response.
Glenn