Hello all I SEVERELY need your help with this, so please bare with me. I currently have a Kenwood KR-3090 receiver/preamp (http://www.fmtunerinfo.com/oldp5-4070-3090rx.gif) hooked up to my turntable. The turntable isn't important in this, but what is important is the speakers. I have 2 small stereo speakers hooked up to them, plus 2 Hitachi HSA-3000 (50W constant per speaker) floor speakers hooked up. I have come across a good pair of Cerwin Vega 380se for purchase and would like to replace the smaller speakers with the Vegas. The Vegas are quite powerful (400W max), and i'm very concerned about not being able to supply the right power to both sets of rather large speakers without blowing up the amp, speakers, or both. Would I need to reinvest in an amp? Any good answer that would lead me in the right direction would be greatly appreciated. Thank You!