Alpine RUX-H01 Bass Knob Controller Powersport Source Units It puts out six channels

It puts out six channels of 50 watts RMS each to speakers with 4- to 2-ohm impedances — so it'll work equally well with factory and aftermarket speakers — plus two channels that can each produce 150 watts RMS at 4 ohms and 300 watts RMS at 2 ohms

and Adaptive Crossover Technology

Connect to heading sensors

Adaptive LP Crossover: Fine-tune your subwoofers for optimal sound quality

Alpine RUX-H01 Bass Knob Controller Powersport Source Units It puts out six channelsProduct highlights: remote level controller for Alpine bass amps and amp channels mounts to an Alpine Halo receiver works with the following Alpine amps: S A60M S A55V R A75M R A90S X A70F X A90M X A90V adjusts gain from 0 to 12 dB multi amp capable (standard phone cable splitter required not included) 16' connection cable warranty: 1 year