What type of bass knob plug is this? Looking for a adapter of some sort to use the bass knob I have. I originally thought this was a regular phone cord but
Amazon.com: Skar Audio RP Amplifier Series Replacement Bass Knob Control Package : Musical Instruments
Universal Bass Knob with Digital Voltmeter - CT Sounds – CT SOUNDS
1 Bass Knob NEW Universal Level Volume Control Knob Car Amplifier Bass RCA | eBay