Hertz HRC 02 is a wired remote level control that lets you adjust your subwoofer output from the driver’s seat. It provides a -20 dB to +6 dB adjustment range and is designed for use with compatible amplifiers that support a remote sub level control connection. Key Features Remote sub level control: -20 dB to +6 dB adjustment range Secure connection: Molex-style connector interface (amp must support remote sub level control via Molex) Mounting options: Top-mount or recessed-mount installation Dimensions Diameter: 53 mm (2.087") Depth: 29 mm (1.142") Hole cutout: 45 mm (1.772") Compatibility Notes Important: Compatible only with amplifiers equipped with a Molex connector for sub remote volume control. Hertz compatibility list (examples): Venezia V6 / V6 24V / V5 / V5C / V4 / V1 / V1 24V, and DP 1.500. If you’re unsure whether your amp supports HRC 02, message us with your exact amplifier model and we’ll confirm compatibility before you order. Fitment, Installation & Warranty Notes Fitment Help: Need help confirming fitment, compatibility, amplifier matching, or installation parts? Use our Fit Guide or contact us through the chat button before ordering. Authorized Retailer: MCOR Automotive is an authorized Hertz retailer. Products purchased from MCOR include applicable manufacturer warranty coverage when installed and used according to manufacturer guidelines.