The Deputy was patterned after early Marshall amps. Even the name was a tongue
in cheek shot at Marshall. Marshall... Deputy..., get it?
It was a two channel amp with a unique 5th input that sent the guitar signal
to both channels thus allowing the blending of the two via each channel's volume control.
This mimicked a trick, often used on Marshalls, where an extra piece of guitar cable
was run between inputs to achieve the same result but without the hassle of extra cords.
The Deputy II added an extra pair of output tubes and used two output transformers
to double output power level.