Check the listing for details. SOUNDSTREAM SR5.3500D 5-Channel Car audio Amplifier 5 Ch Class D 3500W PN5.640D. Color: Silver, Condition: New. Listed at 129.95 USD. BRAND NEW Brand New. Factory Sealed. Warranty. Fast Free Shipping SOUNDSTREAM SR5.3500D 5-Channel Amplifier SR53500D 5Ch Class D Amplifier 3500W Maximum Power SR5.3500D AmplifierReign Series 5-Channel Amplifier Potential Max Power 3500 Watts RMS Power @ 4Ω 140W x 4 + 300W RMS Power @ 2Ω 220W x 4 + 500W RMS Bridged @ 4Ω 440W x 2 + 500W Remote Gain Control Included Strap Bridge Mode – Master/Slave N/AWe’re in a time where small is “in.” Smaller, more economical vehicles are more and more desirable. But that doesn’t mean you have to sacrifice big power for your system. Reign OVERDRIVE amplifiers pack huge amounts of power into small chassis thanks to efficient full-range Class-D topology and SMT technology. Complimented with every possible preamp adjustment, OVERDRIVE amplifiers leave nothing to be desiredSPECIFICATIONSSR5.3500DMax Power3500 WattsRMS Power @ 4Ω140W x 4 + 300WRMS Power @ 2Ω220W x 4 + 500WRMS Power @ 1Ω440W x 2 + 500WLow Pass Filter40Hz-180HzHigh Pass FilterN/ABass Boost0-12dBBass Boost Frequency30-80HzSubsonic Filter10Hz – 50HzFrequency Response10Hz -20KHzS/N85dBInput Sensitivity0.2-6VTHD