Description: This amplifier level controller is a must-have for any car audio enthusiast. It allows you to easily adjust the volume of your subwoofer or amplifier directly from your dashboard, eliminating the need to constantly reach for your head unit. Featuring universal RCA connections, it ensures seamless integration with most audio systems for superior bass control and sound balancing on the go. Feature: 4 RCA's Mount in or under the dash Dash Mount Amplifier Level Control for Volume Adjustment Can Adjust the Amplifier Gain While Driving Perfect for Balancing the System to Change Music Styles Simple in and out connections, no additional wiring needed Made from quality materials and metal for optimal signal transfer Volume Balance: Adding subwoofer level control to any head unit or balance multiple amplifier mounts, enable volume balance in any part of the amplified system; With RCA Composite Cables, this amplifier controller offers high-quality signal transmission; You can trust that you're getting the best sound possible with our level controller Convenient Dash Mount: The amplifier level control is mounted on the dash for easy access and control; Set your sub AMP volume to maximum gain and effortlessly adjust to your desired effect by rotating the knob; The compact design allows the car level controller to be mounted virtually anywhere Easy to Use: Wired remote volume control compatible with the most Head Unit and Amplifier Combinations; The bass control simply connect the RCA input and output connectors between amplifiers and source unit; 2 screws make your installation faster Wide Application: The amp level controller features a universal RCA connection that fits for a range of vehicle and can also be applied to home subwoofer and Motorcycle, widely connected with radio, speaker, amplifier, bass, etc Fitment: Universal Compatibility: Works with most car head units and amplifiers with RCA outputs. Vehicle Use: Ideal for cars, trucks, SUVs, and even motorcycles. Other Applications: Can also be applied to home audio subwoofers. Specification: Color: Black Interface: 2*RCA Output, 2*RCA Input Total Length: 27.5cm (Approx) The distance between the mounting holes: 4.4cm (Approx) Quantity: 4Pcs Suitable: Suitable for most of the car. Package included: 4Pcs Amplifier Level Controller (with built-in knob) 16Pcs Mounting Screws Other accessories are not included Note: Please allow 0.5–1cm differences due to manual measurement. Due to the light and screen difference, the item's color may be slightly different from the pictures.