Im thinking about trying the Avalon U5 as a preamp and a DI at the same time and I have a few questions which I couldnt seem to find the answer to in a search... The active to through switch sends either a direct signal or the boosted/EQed signal to the "Thru out" jack on the front panel for driving a power amp correct? Does the active to through switch only effect the front jack? Also do the boost/EQ knobs effect the two outputs on the back? Which output on the back is best for connection to PA? Ideally I would like to have the gain control only the connection to the power amp so it doesnt boost the signal going to the house every time I would need to turn up or down at the amp.