MB Quart ZA1-1000.1 1000 Watt Mono Amp With Top Mounted Controls Features: 1000 Watt Mono Amplifier Top Mounted Controls Affordable high-end amplifiers with striking design Elaborate preamplifier with extended control Top mounted controls for simple setup & adjustment Q-Stasis preamp stage with wide input range Class SQ A/B topology designed by Lukas Lowe Class Q1 proprietary class D topology Fluid-FETS hand selected insulated MOSFETS Focused mass heat sink designs VARIABLE LOW-PASS: 30Hz-250Hz VARIABLE SUBSONIC FILTER: 15Hz-35Hz 45HZ BASS BOOST: 0-10dB AMPLIFIER FUSING: 60A x 2 Type: Amplifiers RMS Power: POWER @ 1-OHM: 1 x 1000 Watts POWER @ 2-OHMS: 1 x 750 Watts POWER @ 4-OHMS: 1 x 475 Watts Frequency Response: 15Hz-250Hz THD: SNR: >90 I/O Ports: INPUT (RCA JACK) Dimensions: 12.5 x 9.2 x 2.2