Grid leak biasing

[K O'Connor]

Hello Citizens!

As they used to say, "All roads lead to Cheops".

Al'likaa' (Goodbye)

Some say "All leads lead to a Marshall"

I imagine those would be people who are already deaf from playing Marshalls or who have never actually played one?
Or in this modern era, are so conditioned by ipod sound that Marshall sounds acceptable?

Waaaay back, a friend and I rented a Marshall head and cabinet to try out. We opened it up and traced the circuit and played it with different guitars, basses and effects. It sounded really dreadful. So much IM and harshness! I can't say I've ever heard a stock Marshall that sounded good.

Regarding the Supro: Those old amps like Supro and Gibson et al often had multiple inputs for different instruments, microphones, accordians, phono players with crystal cartridges, intending for the amp to be a portable PA system for the whole band. So, lots of tubes. Then add tremolo or reverb and the tube count rises. 6973 you can deal with more or less like a 6BQ5-EL84 as far as OTs go. Speakers were often quite generic low-watt "full-range" types.

Remember that the old speakers are well broken-in by now and a new driver will sound comparatively hard and lifeless.

Have fun