Soundstream RN1.2000D Rubicon Nano 2000W Class D 1-Channel Amplifier Rubicon Nano 2000W Class D 1-Channel Amplifier RMS Power Range: 400Wx1@4-ohms / 600Wx1@2-ohms / Bridged: 1000Wx1@4-ohms Maximum Power: 2000 Watts MOSFET Power Supply w/ Audiophile Grade IRTM Transistors Hybrid Aluminum Alloy Heatsink for Optimum Dissipation