I'm considering doing something similar with a Strat. Townshend uses Eric Clapton Strats though, and I've also read that he has an EMG preamp to buffer the piezo signal. So, when you add 1+1+1...9V battery for Clapton's mid boost electronics, 9V battery for Powerchip and 9V battery for EMG buffer preamp. I'm wondering if I can run the midboost and one of the others off of the same 9V and at least keep it to two batteries? I'm assuming the battery box you had installed is for the Powerchip? Is that one of Fishman's battery boxes?