the epicenter is not a line driver, its like a harmonizer almost, it just gives you bass boost at a select frequency, can make some systems sound like they play insanely low if you want it too. I would look into a crossfire CFQ5.2 line driver or RW Audio (if you can find one) for spl

 

ya eppicenter is great for tapes and crappy recordings ,it brings the dead to life , i am very amzed with this machine , as for SPL i think it would be a waste