HD750/1 - JL Audio Monoblock 750 Watt HD Amplifier HD750/1 - JL Audio 1 Channel 750 Watt HD Amplifier 750 watts RMS x 1 (1.5 - 4 ohms per channel) Subsonic filter and output polarity control Removable power and speaker plugs Dimensions: 10-3/4"W x 2"H x 7-7/8"D