BAK400XL-PRO 400W Off-Road Audio Amplifier and Tower Speaker Kit with Bluetooth Controller

A Complete Audio Streaming Solution

Includes everything you need to stream Bluetooth + 400.2 W amplified audio:

  • (4) 6.5” ProBox RGB Tower Speakers
  • 400.2 W die cast sealed amplifier harnessed with power wire and fused link
  • BTR-14 submersible Bluetooth controller
  • AUX/USB voltage meter
  • Complete system ready for plug and play installation

MSRP: $1,150

Rubber molded inserts

Rubber molded inserts around the wiring prevent water from entering the amp.

Plexiglass panel

A removable plexiglass panel with a rubber gasket protect the gain and crossover controls.


The included Bluetooth® and USB/AUX modules pop into any standard rocker switch slot.

RGB Tower Speaker

The four 6.5" RGB Tower Speakers create a dazzling light show that you can command with the free GLO•PRO app.

Wiring Installation Guide

Click here to download a PDF (79 kB)

Wiring installation diagram

BTR-14 Module Instructions

Click here to download a PDF (95 kB)

BTR-14 module instructions




Golf Carts

Golf Carts



Personal Watercraft

Personal Watercraft

Can Your Amp Do This?


Control Your RGB LED Lights from Your Phone

With the GLO•PRO app, you can use your smartphone to simultaneously control the colors and flash pattern of the LEDs in your ProBox RGB tower speakers, RGB component speakers, and RGB wheel well kit. The GLO•PRO app is available for free from the iTunes App Store and Google Play.

GLO•PRO app icon
iTunes App Store Badge Google Play Badge

Assembled in the USA with parts from China. Availability, pricing, descriptions and specifications subject to change without notice.