Focal FPX 4.400 SQ 4-channel car amplifier — 70 watts RMS x 4

Power-packed Focal's FPX 4.400 SQ amplifier delivers 70 watts RMS per channel in 4-channel mode, or up to 200 watts RMS per channel when it's bridged to 2-channel operation. This impressive power comes from a compact chassis that's just a little larger than one of my Size 10 bedroom slippers, so it'll probably fit just about anywhere in your vehicle. Tone controls and high-fidelity Separate high- and low-pass filters on the front and rear channels let you optimize the signal for the best tone without distortion. Focal's engineers designed this amp to reproduce your music with unerring precision, so it'll pair up nicely with high-performance components or smaller subs. Product highlights: 4-channel car amplifier 70 watts RMS x 4 at 4 ohms (100 watts RMS x 4 at 2 ohms) 200 watts RMS x 2 bridged at 4 ohms (4-ohm stable in bridged mode) CEA-2006 compliant Class-AB amplifier design separate variable high- and low-pass filters (40-5000 Hz, 12 dB/octave) for front and rear