4Channel Amplifier With MOSFET Power SupplyPower OutputRMS Power90W×4@4ohmRMS Bridged Power 230W×2@4ohmTHD<0.2%S/N RATIO>85dBLow Pass30Hz-250HzHigh Pass Frequency:50Hz-1KHzBass Boost Center Frequency 45HzBass Boost ±12dBTreble Boost Center Frequency :10KHzTreble Boost :±12dBThermal,Overload,Short ProtectionGold Plated RCA &Speaker TerminalsDimensions(L×W×H)519×314×53mm