Axxess AXDSPX-GL9 Digital signal processor and T-harness — add an aftermarket amplifier to the factory system in select 2014-Up GM vehicles

Axxess AXDSPX-GL9

Digital signal processor and T-harness — add an aftermarket amplifier to the factory system in select 2014-2000 GM vehicles

Plug in for better sound

Let's face it, your GM vehicle's fancy feature-filled radio doesn't sound that good, but you can't replace it because of all the good things it does. Axxess, a master producer of vehicle interface devices, has come out with this fully-tunable AXDSPX-GL9 digital sound processor that plugs into your factory radio and gives you the ability to add aftermarket amplifiers, transforming your vehicle's interior into the sweet-sounding music listening room you want.

Bluetooth® control

You make all your sound adjustments via the Bluetooth connection on your Android or Apple device using Metra's AXDSP-X app. Adjustment features include a 31-band graphic EQ with high-pass, low-pass, and bandpass filter options on each channel. Time delay allows you to align the sound of all your speakers in order to create the perfect sound stage centered on the driver or prime listener.

System options

The AXDSPX-GL9 comes with a wired remote bass knob, so you can control the bass from the front, when one of the assignable output channels goes to a sub amp. Other connectors in the harness allow you to add even more amplifiers and create your own large custom sound system.

Product highlights:

digital signal processor and T-harness

GL9 harness fits select 2014-20 GM vehicles

plugs into factory radio

allows you to add aftermarket amplifiers then tune your system

6 inputs, 10 individually assignable output channels

settings adjusted through tablet or smartphone running the AXDSP-X app

each channel features:

31-band graphic EQ

high-pass, low-pass, and bandpass filters

time delay (up to 10ms)

bass knob included

chime control for GMC vehicles

retains OnStar® voice prompts

10 RCA outputs: front L and R, rear L and R, six assignable (up to 5 volts)

warranty: 1 year

MFR # AXDSPX-GL9

What's in the box:

DSP Interface module

20/16-Pin T-harness

16-Pin Output harness (11 female RCAs / 2 bare-ended wires)

Remote bass control (attached 5' bare-ended orange & black wires)

Bass control mounting bracket

Two 8mm screws

Instruction manual

Bass control installation instructions

Vehicle Fit

Chevrolet (non-amplified)

Colorado 2015-2019 (RPO: IO5 or IO6)

Cruze 2016-2018 (RPO: IO5 or IO6)

Equinox 2018 (RPO: IO5 or IO6)

Malibu 2016-2018 (RPO: IP1)

Silverado LD 2019 (RPO: IO5 or IO6)

Silverado 2014-2018 (RPO: IO3 , IO5 or IO6)

Suburban 2015-2020

Tahoe 2015-2020

GMC (non-amplified)

Canyon 2015-2018 (RPO: IO5 or IO6)

Sierra Limited 2019 (RPO: IO5 or IO6)

Sierra 2014-2018 (RPO: IO3 , IO5 or IO6)

Yukon 2015-2018