I've got the Pioneer VSX-LX70 amp ( http://www.pioneer.eu/uk/products/archive/VSX-LX70/page.html ), 180W per channel and am upgrading my speakers to: Klipsch RF-7 II Front (250W RMS / 1000W peak - 101dB @ 2.83V / 1m) Klipsch RC-64 II Center (200W RMS / 800W - 99dB @ 2.83V / 1m) Klipsch RS-62 II...