MB Quart DA118001 Brand: MB Quart Features: All new ground-up design Focused mass aluminum heat sinks 6.5 wide PCB's provide better parts spacing Ample extrusion length for high thermal performance Three-stage protection circuits On-board fusing for all models VARIABLE LOW-PASS: 40Hz-300Hz VARIABLE SUBSONIC FILTER: 10Hz-40Hz 45HZ BASS BOOST: 0~12dB AMPLIFIER FUSING: 70A x 2 REMOTE LEVEL CONTROL Type: Amplifiers Amplifier Class: Class D RMS Power: POWER @ 1-OHM: 1x1800W POWER @ 2-OHMS: 1x900W POWER @ 4-OHMS: 1x500W Frequency Response: 10Hz-300Hz THD: SNR: >95dB