Fender Bassman Blackface/Silverface 50w Tube Set
VI JJ 12ax7 - preamp bass channel
V2 JJ 12ax7 - preamp 2nd stage bass channel
V3 JJ 12aX7 - preamp normal channel
V4 JJ 12at7 - phase inverter (you can always substitute a 12ax7 if you want higher gain)
V4 JJ 6L6GC - output tube #1
V5 JJ 6L6GC - output tube #2