HDLC - Universal Level Controller, Flush & Surface Mount

The HDLC is a universal line output level controller designed for seamless integration into any car audio or powersports audio system. It provides manual volume adjustment between a head unit and downstream amplifiers, giving installers and enthusiasts precise control over signal levels without returning to the source unit. Compatible with a wide range of vehicles and setups, the HDLC mounts flush or surface-style to fit nearly any installation environment.

• Universal Compatibility: Works with virtually any car audio or powersports audio system
• Dual Mount Options: Supports both flush and surface mounting for flexible installation
• Manual Level Control: Adjusts signal output level independently of the head unit
• Signal Accessory: Positioned between source and amplifier for clean gain management
• Compact Form Factor: Low-profile design suits tight or custom install locations
• Broad Application: Suitable for car audio, powersports, and other vehicle electronics builds