Amplifier Class: Class HPower Output (Stereo Mode):Approx. 1300W to 1450W per channel at 8ΩApprox. 1800W to 2025W per channel at 4ΩApprox. 2700W per channel at 2ΩPower Output (Bridged Mono): Up to 4050W at 8Ω and 5400W at 4Ω.Chassis Size: 3U standard steel rackmount structure.Cooling: Dual-channel, variable-speed fans venting from rear to front.