Polk Audio Pa1100.5/Aa1100-A 5-Channel 1200 Watt Stereo Amplifier 5-channel, 200 watt stereo amplifier Anodized Extruded Brushed Aluminum Cover For Optimized Heat Dissipation Cast Aluminum End Caps For Optimized Heat Dissipation Solid Aluminum Logo & Cobalt Blue Back-Lit Model Panel High-Speed Mosfet Switching Power Supply & Complementary Bipolar Outputs