Easily adjust the volumes of your car amplifier and subwoofer with this remote controller, allowing you to manage your audio system while driving. Control the amplifier and subwoofer volumes to tailor the sound for your drive, upgrading your incar entertainment and enjoyment on the road. the sound output to suit your preferences and enjoy a tailored listening experience. Designed for car owners who value sound quality, this volumes controller fits various car systems and subwoofers, making it suitable for those seeking to optimize their incar experiences. Use scenarios On a road trip, quickly balance bass and treble to match different music genres without reaching for the head unit. During passenger changes, adjust loudness and balance to keep vocals clear and bass tight for everyone's listening comfort. When configuring a sub or amp, use the remote to dial in the preferred output and achieve the desired overall sound.