Soundstream PA4.1000 Picasso Series 1000W Class AB 4-Channel Amplifier Picasso Series 1000W Class AB 4-Channel Amplifier RMS Power Range: 70Wx4@4-ohms / 125Wx4@2-ohms / Bridged: 250Wx2@4-ohms Maximum Power: 1000 Watts MOSFET Power Supply w/ Audiophile Grade IRTM Transistors Hybrid Aluminum Alloy Heatsink for Optimum Dissipation