Focal

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. 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. Focal FPX 4.400 input and control panel