Car Amplifiers 4 Channel 5 Channel Mono - 1 Channel Replacement Parts Filter Sort Filters In Stock 200-500 1000-2000 Remove All Filters Availability In Stock Price $100-$500 (2) RMS Power 200-500 (2) 500-1000 (8) 1000-2000 (2) Peak Power 500-1000 (6) 1000-2000 (2) Mounting Depth 3.5-4.49" (2) 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 Alpine R2-W8D2 Next Gen 8" Sub R-Series Dual 2-Ohm 350 RMS Includes HA-A400.1... $249.95 Alpine R2-W8D4 Next Gen 8" Sub R-Series Dual 4-Ohm 350 RMS Includes HA-A400.1... $249.95