Greetings! I am curious about possibilities of using an integrated bass head with the addition of a power amp to drive more speakers/volume. For example: If you had an Eden WT400, could you run a line from the 'preamp out' to a QSC poweramp and drive more speakers w/o any kind of performance degradation? Would you still be able to drive speakers w/ the Eden's amp at the same time w/o diminishing sound? Follow-up question: How much are the preamps in, for example, the Eden WT400 and the Eden Navigator or say an SWR350 and a Grand Prix? I'm guessing the separate preamps sound better, but what's the real scoop? Thanks!