I posted a couple of threads while building this amp and thought I would post-script them by showing the final result. I'm thrilled with it to say the least. I had started with a cabinet I bought from a guy on Craig's list. It's a small cab, and accommodates an 8" speaker only. It's 1" wider and 1" deeper (same height) than a Fender Champ 600. It was harder than I expected to find an amp chassis to fit it. I purchased the amp off ebay. It was out of an organ and had (1) 12AU7 that provided one stage of gain, and phase inverter. It uses a 6X4 rectifier, and (2) 6W6 tubes (p-p) for power. I added another 12AX7 tube socket and rebuilt the preamp and tone stack based on a Fender Deluxe schematic. I'm using the power amp as is and the existing transformers. Because the chassis was so small and left no space, I built an outboard control panel and installed the tone stack on it. I've run the amp with 6V6's and the original 6W6's - sounds great with both. Not too loud, but plenty loud for practicing in the house. It's got just a little bit of overdrive - just right for what I was after. I set it up so I could plug it into an external cabinet and drive a larger speaker. It sounds really nice driving a 1x12 cab. This amp was done on the cheap - the cabinet cost me $25 for 2 of them off CL, and I sold one on eBay for $30. The amp including tubes was $16 (plus$12 shipping). Add another ~$15-20 for switches, pots, resistors, and caps. So the total was ~$60.