Alpine RUX-KNOB2 Remote Bass Subwoofer Level Control for X R S V PDX Series Amps

PDX Series: PDX-M12, PDX-M6, PDX-V9. Remote Bass Knob. With the RUX-KNOB2 installed inside the vehicle cabin, easily adjust the bass gain of your amp while seated inside. 16' connection cable. The RUX-KNOB.2 features two mounting flanges for mounting the knob on or under your dash.