Acoustic Audio XS1001 Xtreme 1000 Watt Mono Block Amp Car Amplifier Acoustic Audio XS1001 Xtreme Series Mono Block (1-Channel) Class A/B Car Amplifier 500 Watt RMS to 1000 Watts Output Power Free Remote Subwoofer Level Control with Variable 0-+12dB Bass Boost RCA Line and Speaker Level Inputs/Variable Gain Control/Low Pass Filter/Subsonic Filter 90 Day Manufacturer's Warranty