Universal Car Modified Panel Audio Volume Knob RCA Female Input Output Audio Volume Control Knob Adjuster
Universal car amplifier/speaker volume controller
Two adjustment methods, by gain adjustment or by frequency
As long as you gently rotate the buttons of the controller, different frequencies can make the song sound different, easy to use
It is suitable for car audio modification to install audio adjustment knob to improve the convenience of audio adjustment when the car driver is driving
Simple installation, no additional wiring needed, durable and reliable
