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The optional RUX-KNOB.2 remote bass control knob plugs right in to select Alpine amplifiers for quick direct subwoofer control to make bass adjustments on the fly.


Tweak the subwoofer volume from the driver's seat.

The RUX-KNOB.2 remote level controller works with Alpine's amplifiers so you can manage your bass level from the front of your vehicle. This handy little knob adjusts your amp's level from its set maximum volume all the way down to virtually "off." Since it adjusts level and not "bass boost," you'll maintain the same bass tone as you turn the volume up and down. You can control multiple amplifiers with a single remote by adding a standard phone cable splitter (not included).



The RUX-KNOB.2 is specifically designed as the controller for use with any of the following PDX Amplifiers: MRV-M1200, Mrv-M500, MRV-M250, PWA-S10V, KTP-190U, MRX-M50, MRX-M100, MRX-V60, PDX-M12, PDX-M6, PDR-M65, PDR-V75, PDX-V9, X-A70F (3 Channel Mode), X-A90V, and X-A90M.



With the RUX-KNOB.2, get full control over your Alpine amplifier, conveniently from inside the car. With the RUX-KNOB.2 installed inside the vehicle cabin, easily adjust the bass gain of your amp while seated inside.

Alpine RUX-KNOB.2 Remote Bass Knob Controller


    • Remote level controller for Alpine amplifiers
      • mono amps
      • sub channel of 5-channel amps
      • bridged channels 3/4 of the X-A70F
    • Adjusts gain from 0 to -12 dB
    • Multi-amp capable (standard phone cable splitter required — not included)
    • 16' connection cable

    What's in the box:

    • Alpine Remote Bass Level Control module
    • 16.4' (5 meter) connecting cable (RJ-14 plugs on both ends)
    • 4 Self-tapping screws (Length 1/2")
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