This tiny amplifier packs a serious full range punch, delivering a staggering 100 W to each of its four channels into 2 Ohm (14.4 V, 1% THD). The breakthrough that makes this much power possible in such a small chassis is our NexD™ ultra high speed switching design, which allows for full bandwidth Class D operation with extremely low distortion and outstanding efficiency. Use the M400/4 in combination with our M600/1 monoblock to build a 1000 W amplification system to power four satellites and a subwoofer and fit the whole thing under a seat Or use the M400/4 by itself to power two satellites, plus a subwoofer. With Mp-series amplifier, the possibilities are endless. The M400/4 includes a 12 dB/octave filter for each channel bank, which can be configured as a low-pass or high pass filter and offers continuously variable cutoff frequency selection from 50 – 500 Hz. With the addition of an HD-RLC remote level control (sold separately), the amplifier Channel 1 and 2 level or overall level can be directly controlled from a remote location. This marine amplifier features white and gray powder coat finishes, a gasketed cover for the controls and stainless steel hardware for durability in the marine environment.