Soundstream RN1.3000D Rubicon Nano 3000W Class D 1-Channel Amplifier Rubicon Nano 3000W Class D 1-Channel Amplifier RMS Power Range: 600Wx1@4-ohms / 900Wx1@2-ohms / Bridged: 1500Wx1@4-ohms Maximum Power: 3000 Watts MOSFET Power Supply w/ Audiophile Grade IRTM Transistors Hybrid Aluminum Alloy Heatsink for Optimum Dissipation