I tested out a used High Fidelity X-Can v2 tube headphone amp at a local high end audio store. I tried it there and it was extremely impressive hooked up to some quality CD Player. There wasn't even ...

I have a power amp (a Yamaha M-80) which is only specced to run at 110V/60Hz. I can get a stepdown transformer of adequate power rating easily, but it obviously doesn't alter the frequency. I'm ...