In an old thread about using The Fishman Pro EQ as a preamp direct to a power amp, someone had mentioned The Ebtech Line Level Shifter as a solution to boosting the Fishes' output. With all the discussion about input sensitivity in recent threads, I wonder if anyone has used this or had an opinion about whether it would work to help match the lower output of some preamps with the inputs of a poweramp? Too much boost? Not enough? Needs to be adjustable?