SpeakerCraft ASM99010 10 Inch 120 Watt Sub Powered Home Theater Subwoofer New ASM99010 Speakercraft Home Audio Subwoofer 120 Watt RMS Amplifier Built In 10" High Fidelity Subwoofer Volume Control on top of the subwoofer - Flush with subwoofer for professional look LFE (Low Frequency Effects) Input