Golfugh,
I hope you are able to get your price for your amp and preamp, but if not, would you consider a donation to the Jr. Audiophiles project (see the Jr. Audiophiles circle). I need a preamp to put in a physics classroom that is participating in our speaker building competition. A donation would be tax deductable as we have a non profit status. It might not be as good as cash in your pocket, but we would give you a receipt for a reasonable retail amount, and you'd be helping get kids interested in science and audio.
Regards,
Scott Clark