This LC-1 Remote Amp-Level Controller from PAC Audio adds subwoofer level controls to any head unit. It enables volume balance in any part of an amplified system and fine tunes the volume of any RCA line-level signal. Compact housing allows the unit to be mounted virtually anywhere so control is at the user's fingertips. Simple in and out connections, no additional wiring needed.- Adds subwoofer level controls to any head unit.- Enables volume balance in any part of an amplified system.- Preamp stereo remote level.- Mounts in dash or under dash.- Includes remote mounting bracket.- Sold as 1 Each.