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 c