Mine is relatively modest: Pioneer Elite 55" rear projection; Adcom preamp, Marantz processor, various medium-range sources, Proceed 3 channel & Adcom 2 channel amps, Definite Technology bi-polar main fronts with 300 watt powered 15" sub in each, Mirage rear and center channel drivers. All in a 15x20 room. Looking at a Marantz DLP based front projector (scaler included) that's comparable to a Runco CRT system for a third price.