I'm considering getting a GK MB200 micro head and was wondering if anybody out there in TB world has ever tried using it as a standalone preamp via the Line Out jack plugged into a power amp? The online manual says you can run the GK MB200 without a speaker load so it stands to reason that you can do it without damaging the unit. If so, how well did it work and was there plenty of juice to drive the power amp? Thanks everybody.