Check the listing for details. ALPINE RUX-KNOB.2 BASS GAIN KNOB LEVEL CONTROL REMOTE & WIRE SELECT AMPLIFIERS. Condition: New. Listed at 49.99 USD. Brand New! RUX-KNOB.2 - Alpine BASS GAIN KNOB LEVEL CONTROL REMOTE & WIRE FOR SELECT Alpine AMPLIFIERS NEW Features & Specifications: Product Overview 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. COMPATIBLE MODELS The RUX-KNOB.2 is specifically designed as the controller for use with any of the following PDX Amplifiers: MRV-M1200Mrv-M500MRV-M250PWA-S10VKTP-190UMRX-M50MRX-M100MRX-V60PDX-M12PDX-M6PDR-M65PDR-V75PDX-V9X-A70F (3 Channel Mode)X-A90VX-A90MR-A90SR-A75MS-A60MR-A60F International Shipping: Free shipping DOES NOT APPLY to Puerto Rico, Hawaii, Guam, Alaska or any country outside of the United States.Please message us for shipping quotes. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up – do not confuse them for additional shipping charges. Warranty: Each and every product for sale on ebay.com by woofersetc is covered under a (1) One Year Warranty, and can be returned for a period of (1) one year for warranty service. If you have purchased a product from us within the last one (1) year, and it is failing to perform as intended by its manufacturer, please email customer service. You will be issued a Return Authorization Number. Returns will not be accepted without a previously issued RA#. In order to maintain an inventory of 100%, Brand New, A-Stock, untouched products, all sales are final. We ask that you please be sure you are ordering the correct product. Protect Your Product With a Consumer Priority Service Warranty