• Plug-and-Play Add-a-Sub Solution: Easily add an aftermarket subwoofer to select GM vehicles using the Axxess AXSUB interface with included vehicle-specific T-harness and bass control knob.
• Designed for Amplified & Non-Amplified Systems: Compatible with factory amplified and non-amplified audio setups, processing low-frequency signals from the factory radio for improved subwoofer output.
• 5V RMS Non-Fading Outputs: Features a 2-channel non-fading 5V RMS output with a fixed 234Hz low-pass filter for clean, strong bass response and consistent performance.
• Includes Bass Knob & Remote Output: Fine-tune bass levels in real time using the included adjustable bass knob. Provides a 250mA remote turn-on output for connecting an aftermarket amplifier.
• USB Updateable & Radio-Location Install: Micro-B USB updateable for future compatibility. Installs at the factory radio location for a seamless integration without modifying factory wiring.

Axxess Add-a-Sub Subwoofer Interface w/ Bass Knob & T-Harness for GM 2013–2020 

This Listing Includes:

• (1) AXSUB Add-a-Sub Interface


• (1) AXDSPX-GM1 GM Vehicle-Specific T-Harness


• (1) Adjustable Bass Knob

Axxess offers a true plug-and-play solution for adding an aftermarket subwoofer to select GM vehicles. The patented AXSUB interface processes low frequencies normally restricted by the factory radio, allowing your subwoofer to reach its full output potential—whether your vehicle is equipped with an amplifier or not.

Features:

• Designed for amplified & non-amplified systems


• 2-channel non-fading 5V RMS outputs


• Fixed 234Hz low-pass frequency


• 250mA remote turn-on output


• Adjustable bass knob included


• Vehicle-specific plug-n-play harness


• Installs at factory radio location


• Micro-B USB updateable

Technical Specs:

• Output Channels: 2


• Output Voltage: 5V RMS


• LPF: 234Hz


• Remote Output: 250mA

Vehicle Compatibility GMC:

• Acadia 2019-2019 , IO5/IO6 & Bose


• Acadia 2017-2018 , UQA


• Canyon 2015-2018 , Bose


• Canyon 2015-2018 , IO5 or IO6


• Sierra Limited 2019-2019 , IO5 or IO6


• Sierra 2014-2018 , IO3, IO5 or IO6


• Terrain 2018-2018 , IO5 or IO6


• Yukon 2015-2020


• Yukon 2015-2020 , Bose