i have a valvetronix AD30VT amp and idk that awfully much about amps, but wut is the line/phone jack on the back for?
Plug in your headphones.
well headphones i would guess and line out for recording to your comp or sumtin
yeah i knew the phone part but idk wut the "line" would be for
well there the same jack that can be used for Head phones or as a line out for a speaker cabinet or a mixing board
o... ok so its pretty much useless to me