I have a SS PA (Bogen Challenger 100 mono) amp that im using temporarily as a bass guitar amp. Being solid state it has a lot of grainy distortion when cranked. Sounds great for guitar, but makes a bass sound fuzzed and farty unless i have the amp turned down reaaaal low. I have hotter pickups in the bass than in my guitar so i think that might be one of the culprits. (And the strings are a lot thicker :D ) I was wondering if there was anything i could do to make the amp a little cleaner. I think it uses germanium transistors, not positive on that, tho. One thing I found that I may try are fast recovery/soft recovery diodes on the power rectifier. I dont want to go really major, otherwise id add tubes :p Anyone have experience with said diodes or have tried to "clean up" a SS amp?