I have a nad c370 hooked up to my rebuilt cerwin vega at 15s. I would like more pump from my speakers I can crank up the nad and the speakers want more. I see another nad on ebay and was wondering if I could hook two of these amps up together and then use a preamp to get what I am looking for?? I like the nad, and the looks may be plain but I think there classy. Another option I was looking at was the carvers on ebay that have lots of power?? Any suggestions would be greatly appretiated. Thanks