I just built a 5e3 amp using a hoffman board kit inside an old PE tube pa head that was gutted of everythign but transformers and sockets. I wired my board in using 6sl7 tubes in the preamp, and changed the cathode resistor from a 250 ohm one to a 390 ohm one, which feels liek it has less compression, more attack, and runs a little cleaner. High and low gain on the bright channel, and just high gain on the normal channel. It was my first build, and it was a lot of fun. :-)





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