I have a gig coming up on the 28th and want to wire two amps to operate simultaneously. The amps are identical. It's this Hartke Kickback 12 combo- Hartke - Kickback 12 The amp has no pre-out or post(power amp)-in. The headphone out cancels the speaker output. The speaker actually has a 1/4" jack on its receiving end that plugs into the main out on the back of the top-mounted head. So the amp actually has a full out, but no way to tap off into a second amp. I just want the same signal from my bass going into both amps without a loss of signal. My P bass has low output. So, I'm thinking that if I could tap off a pre-out (pre or post EQ) from one head and plug it into the power section of the second head, I'd have control of both amps from just one of them. I could bring wires out through a corner into a temporary jack for the moment and worry about making it pretty later. Is this simple? It seems like it should be. Since the pre is off of a normal 120v/60Hz powered head I'm figuring that I wouldn't have an signal loss by splitting the pre out to two power amps. Sound right? If I tried a direct box or a Y-connect off my bass I think I'd risk losing impedence and also wouldn't have singular volume/tone control for both amps from just one. I'd have to control each amp seperately. Any advice would help. I hope I don't need too much help and I'm glad to have someone with real experience behind me. Thanks!