Quick view Compare Rockford Fosgate SKU: M5-1000X1 Rockford Fosgate M5-1000X1 Mono Element Ready Amplifier - 525x1 @ 4-Ohm, 900x1 @ 2-Ohm, 1000x1 @ 1-Ohm MSRP: Was: Price Now $689.99 In stock and ready to ship! Add to Your List