Agreed. Best sound ever, just not practical and doesn't have enough headroom, at least for the type of stuff I do. But a 135...mmmmm....also I would search Bassman 135 because I recall some threads on here about significant differences between Bassman 50/100 and 135..maybe someone could speak to that.
Iirc, the 135 had something called an " inverted transformer", or something like that, which gave it a cleaner sound and headroom.