Small amp — big power
Polk's PA D4000.4 4-channel amplifier may be small, but it can power your front and rear speakers with up to 125 watts RMS each. Or, you can switch this little beast over to 2-channel mode to drive a couple subwoofers with up to 200 watts RMS each. However you use it, this amplifier will fit in almost any location in your vehicle because of its convenient size and shape.
Great looks and a clear voice
Polk developed and employed their full-range Class D amp technology that helps this amp reproduce music very cleanly, with no added coloration or distortion. Separate high- and low-pass filters on the front and rear channels allow this versatile amp to run a variety of speaker systems, like bi-amped mid-bass and tweeter components, or two front speakers and a sub. This amp's tough, good-looking stainless steel case won't tarnish, even in extremely humid conditions.