I'm selling a pair of vintage custom made audio preamps in nice overall condition. These come with stellar Peerless K221Q input transformers. They operate with two 12AX7's, a 6C4 and a 6X4. Based on the components I think they could operate as a tube mic, line or phono preamp but don't have schematics.They have not been recapped but were brought up on a variac and are passing audio. One sounds a bit dark and the other a bit thin. I'm sure recapping would go a long way but these are being priced for basically the value of the transformers.They'll be packed really well and be shipped with FedEx fully insured for the purchase price. Let me know if you have any questions and check out my other vintage audio auctions.Thanks