Alpine PDX-4.100 4-channel car amplifier 100 watts RMS x 4 at Crutchfield
Alpine | S-Series 4-Channel Amplifier
Alpine® 4-Channel Power Pack Amplifier with PowerStack Capability Shop 4k, HDTV's, Car Audio, Home Theater in Roseburg, OR 97470
Alpine PXE-C80-88 8-Channel Hi-Res Amplifier with Digital Signal Processing
Amazon.com: Alpine S-A32F S Series 4 Channel Digital Amplifier 80 Watts RMS x 4, 2 Ohms and RUX-KNOB.2 Driver's Seat Bass Gain Remote Controller Bundle : Electronics