Soundstream RN5.2000D Rubicon Nano 2000W Class D 5-Channel Amplifier Rubicon Nano 2000W Class D 5-Channel Amplifier RMS Power Range: 75Wx1@4-ohms / 200Wx1@2-ohms / Bridged: 600Wx1@4-ohms Maximum Power: 2000 Watts MOSFET Power Supply w/ Audiophile Grade IRTM Transistors Hybrid Aluminum Alloy Heatsink for Optimum Dissipation