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High-quality Curved Dual and Single Row LED lightbars provide great visibility when and where you need it.
Cube Lights
Surface mount and flush mount LED Cubes, give you lots of options for just about every application you need.
Driving Lights
Take your driving experience to the next level with auxiliary driving lights – designed to improve your driving experience.
Municipality & Safety Lights
When you need to get the job done, Heise work and safety lights are designed for worksite lighting and government fleet, commercial and emergency lighting needs.
Marine Lights
Cruise your favorite fishing spot after dark or light up your wakeboard boat using Heise marine grade lights. Torture tested to withstand the elements.
Accent Lights
From side view and single color to RGB kits, Heise has everything you need for an amazing installation.
LED Strip Lights
Illuminate your ride with LED strip lights, available in a wide range of colors and lighting options.
Headlight LED Bulbs
Easy to install, Heise LED bulbs are a brighter, energy-efficient solution.
Jeep® Accessories
Accessories designed specifically to customize almost every Jeep model for stylish, brighter lighting upgrades.
Motorcycle Accessories
Upgrade to a louder, brighter and safer ride with a wide range of universal and vehicle-specific motorcycle accessories. Saddle Tramp offers factory-style lighting, audio, safety and convenience products designed to enhance any ride.
Tap into the growing off-road, truck and powersports market with our newest line of aftermarket accessories.
Trailer Lights
From large commercial tractor trailers to boat trailers and cargo trailers, Heise's new line of trailer lights will ensure your vehicle is seen.
< Back BC-DSPX-HD2

Flash the Factory Radio
Integration technology allows the DSP to reflash the factory radio for a flat response curve, without the need for external equipment. This reduces the cost, saves time, and allows installers to provide better service with complete control over the upgrade.

Digital Signal Processor + Interface
Enhance your sound system with a DSP that reflashes the OE radio and gives you full tuning control from the palm of your hand. Designed for easy integration with aftermarket or factory audio systems and easy expansion with amplifiers or other devices. Refer to the vehicle applications tab or chart for more information.

Important information
The Saddle Tramp DSP is a device that allows a user to flash the Harley-Davidson® radio to a 4-channel, flat audio output curve; but when the device is connected, it locks itself to the vehicle’s identification number (VIN), saving the last known state of the radio into memory. In order to unlock the Saddle Tramp DSP and use it on a different vehicle, or return it, you must remove the flash from the motorcycle, returning the radio back to factory settings. This can only be done 3 times in total. In the event that this product needs to be returned to the manufacturer, it cannot be locked to a motorcycle’s VIN.

Built-in Integration and Easy Installation
  • Designed for amplified and non-amplified models
  • Small footprint for easy installation behind the fairing
  • BC-9715 pre-wired harness included for ease of installation
  • Retains balance and fade control
  • Built-in clipping detection and limiting circuits
  • Bass knob included
  • Water-resistant case & connections
  • Micro-B USB updatable
  • Upgrade Your Music Experience and Customize Your Sound
10 channels of output from the DSP
  • 31-band graphic EQ, or 5 band parametric EQ per channel
  • 4 selectable crossover slopes (12, 24, 36, or 48db per octave)
  • Built-in selectable crossover per channel (high, low & band) to achieve the perfect sound
  • Independent equalization for front, rear, and subwoofer
  • Time delay circuit per channel (front and rear channels can be delayed independently up to 10ms)
  • All programming is done using the AXXESS DSP XL app on Android devices ONLY
  • Read, write, and store configurations for future recall
  • Optional password protection feature for tuning control via the mobile app

U.S. Patent 9,875,078


To ensure proper functionality of the Saddle Tramp product, it is necessary to update the firmware of your Harman radio. Please follow the link below to access the updater files and instructions for updating your radio. Before updating the OE radio, disconnect all aftermarket harnesses. Additionally, a technical document detailing this procedure is available for reference.

H-D Service Portal