Sounds excellent when modified
In its stock state this amp sounds absolutely horrible. In the stock state the overdrive channel is plain pathetic. It sounds overtly buzzy and the low end is loose in a bad way. Even the reverb sounds bad, it completely swamps the signal and it doesn't sound full at all. At first I thought that there's some problem with my amp because I bought it used, but I later tried a completely new one at my local Guitar Store and it too had the same problems. I was about to give up on this amp but then I went though few forums and read about some mods to improve the tonality of this amp. First I replaced the V1 tube with a 12AY7. The difference it made to the sound of the amp was remarkable. Gone was the harsh nature of this amp. The cleans now sound like a Bassman and the overdrive now sounds smooth. It goes from a Bassman like overdrive to a totally unique hot-rodded Bassman style overdrive. Thanks to that small mod it now sounds like a hot-rodded Bassman. Another mod I did was the Steve Dallman Reveb mod. It was really easy to do, all I did was to clip the R103 resistor out from the circuit. This removed the treble bypass on the reverb. I also replaced the stock 2-spring reverb tank with a MOD 9EB3C1B 3-spring tank. Now the reverb sounds rich, lush and huge. I also replaced the speakers with Jupiter Condenser Co. 10LA alnico speakers. The degree upto which it improved the sound of my amp was phenomenal. They even sound great for overdriven tones. With these mods this amp sounds even better than many top tier amps. As for its effects loop, it's a buffered effects loop but it ain't tube buffered. It's buffered with TL072 op-amps. It works fine though.