There are 3 jacks in parallle curiously in between, but only one rglage: the volume!. Simpler you die.
Can be for fun in the bedroom, or a friend's acoustic guitar ...
Please note these amps are prvus to operate in 110V. In addition, their design without power transformer is now considers dangerous.
Except if you're like me a fan and collector of the brand, this amp has little interest today