since the plexi has 4 inputs, what would happen if more than 1 were being used at the same time? im just wondering this because my guitar teacher's washburn amp has 2 inputs so we use both at the same time during the lessons.
Im not sure but is there two chanels on the slp and if there is or isnt, how do you get to overdrive.? Sorry i cant help you but maybe you can help me, or rather my friend since he's is the one with the slp and doesnt know how to change to overdrive.
Fender MIM Strat w/SD Hot Rails in Bridge/Marshall AVT275x/Digitech RP200/Dunlop Classic Crybaby/Fender MIM Jazz Bass/Fender Rumble 25/Pearl Forum 5 Piece Drum Set w/Zildjian ZBT cymbal set/Shure SM58/Line 6 Toneport UX-1.
It's a vintage style amp. Here's how you get it to overdrive:
Crank it way the fuck up.

Edit: there are two channels with two inputs apiece. You could use them all with different instruments if you really wanted to.