• 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

Specification: 

• Cable Core Material: copper core
• Weight: 55g
• Interface: RCA