Car Amplifiers 4 Channel 5 Channel Mono - 1 Channel Replacement Parts Filter Sort Filters In Stock Under $50 Remove All Filters Availability In Stock Price Under $50 (2) $100-$500 (26) Sort SKU: A-Z SKU: Z-A Price: Low to High Price: High to Low Least Popular Most Popular Sort by: SKU Sale Price Popularity Harmony Audio HA-EASY Replacement RCA to Speaker Line Input Amp Adapter for... $11.95 (1) Harmony Audio HA-BRM Replacement Remote Amp Bass Controller for HA-A400.1,... $23.95