Dating fender bassman amp
Most of the amps were finished in a "gray crinkle" finish.
The finishes were baked in the Kauffman family oven.
A transformer is an electrical device that transfers energy from one circuit to another by magnetic coupling with no moving parts.
Amps should only be serviced by a qualified technician.
Leo Fender began building guitar amps before he started manufacturing guitars.
Other configurations are also possible including the Pentode, a tube with 5 active elements providing an additional amplification factor.
There are a large number of tube varieties and uses.