Marts Digital 8-Channel Bluetooth DSP Amplifier

User Manual for BTX8-DSP 8-Channel Bluetooth DSP

Product Overview

The BTX8-DSP by Marts Digital is a high-performance 8-channel digital signal processor (DSP) with Bluetooth connectivity, designed for enhancing your audio experience in car audio systems, home theaters, or professional audio setups. With precise audio control, it allows for fine-tuning of sound output to optimize performance for different speakers or components.

Package Contents

  • 1 x BTX8-DSP Digital Signal Processor
  • 1 x User Manual
  • 1 x Power Cable
  • 1 x Remote Control (if applicable)


  1. Place the BTX8-DSP in a stable and secure location near your audio equipment.
  2. Connect the power cable to the DSP, ensuring the 12V, remote, and ground connections are correct.
  3. Connect your audio source to the DSP using the RCA inputs.
  4. Connect your amplifiers or speakers to the DSP using the RCA outputs.
  5. If using Bluetooth, pair your device with the DSP by selecting "Car music BLE" in your Bluetooth settings and using the default password "000000".


  1. Power on the BTX8-DSP by turning on your audio system or using the remote control.
  2. Use the Air+8 app to control and configure your DSP settings such as routing, gain, crossovers, equalization, limiter, and delay.
  3. Adjust the settings according to your preferences and save your configurations for easy recall.
  4. Enjoy high-quality audio output, tailored to your listening experience.

Troubleshooting Tips

No Power or Lights
Check the power cable connections and ensure the remote wire is connected to your audio system's power.
No Sound Output
Ensure all RCA connections are secure and the correct input source is selected in the Air+8 app.
Bluetooth Connection Issues
Make sure the DSP is in range and not already connected to another device. Restart the pairing process if necessary.
Distorted Sound
Adjust the gain settings in the Air+8 app to prevent clipping. Ensure your speakers and amplifiers are correctly matched to the DSP's output.
App Configuration Problems
If settings are not applying correctly, try resetting the DSP to factory settings and reconfigure your preferences.


Q: What devices are compatible with the BTX8-DSP?
A: The DSP is compatible with any device that supports Bluetooth, such as smartphones and speakers, as well as any audio source with RCA outputs.
Q: Can I save my DSP settings?
A: Yes, the Air+8 app allows you to save multiple configuration profiles for quick and easy recall.
Q: How do I update the firmware of the DSP?
A: Firmware updates, if available, can be done through the Air+8 app. Check the app regularly for updates.
Q: What is the maximum output wattage of the DSP?
A: The BTX8-DSP provides a maximum output wattage of 50 Watts.
Q: How do I reset the DSP to factory settings?
A: You can reset the DSP through the Air+8 app by navigating to the settings menu and selecting 'Factory Reset'.

Customer Support

If you require further assistance or have any questions regarding the BTX8-DSP, please contact Marts Digital customer support for professional help.

FAQ [continued]

**Product FAQ - BTX8-DSP**

**Q: What are the main features of the BTX8-DSP?**
A: The BTX8-DSP is a digital signal processor that offers 8 channel output with 32-bit resolution and a sampling rate of 96kHz. It provides ample connectivity with 4 RCA inputs and 8 RCA outputs, allowing for versatile audio source connections and signal distribution. The device also features enhanced audio control capabilities, including built-in linkwitz-Riley Butterworth and Bessel crossovers, a 31-band equalizer, parametric EQ settings per channel, time distance delay, limiter control, and more.

**Q: What are the connectivity options of the BTX8-DSP?**
A: The BTX8-DSP supports connectivity via RCA inputs and Bluetooth technology. It can be controlled using an Android device and is compatible with smartphones and speakers. The device comes with 4 RCA inputs and 8 RCA outputs for flexible integration in various audio setups.

**Q: What is the power output of the BTX8-DSP?**
A: The BTX8-DSP has a total output wattage of 50 Watts across its 8 channels, providing sufficient power for driving multiple audio devices or channels in car audio systems, home theaters, or professional audio environments.

**Q: Can the BTX8-DSP be integrated into complex audio setups?**
A: Yes, the BTX8-DSP is designed for versatile integration in complex audio setups. It is suitable for use in car audio systems, home theaters, or professional audio environments where precise audio control and distribution are required.

**Q: What control options are available for the BTX8-DSP?**
A: The BTX8-DSP can be controlled using the "Air Plus 8" app on compatible devices. The app allows users to adjust routing configurations, gain settings, crossovers, limiters, equalizers, polarity settings, and more. It also offers memory presets for quick profile switching.

**Q: What are the dimensions and weight of the BTX8-DSP?**
A: The package dimensions of the BTX8-DSP are 7 x 6 x 3 inches, and it weighs approximately 1 pound. The compact size and lightweight design make it easy to install in various audio setups.

For further inquiries or technical support regarding the BTX8-DSP, please contact Marts Digital customer service.


BrandMarts Digital
Model NumberBTX8-DSP
CategoryElectronics > Car & Vehicle Electronics > Car Electronics > Car Audio > Amplifiers
Package Dimensions7 x 6 x 3 inches
Item Weight1 pounds
Item model numberBTX8-DSP
Customer Reviews5.0 5.0 out of 5 stars 1 rating 5.0 out of 5 stars
Best Sellers Rank#28,776 in Electronics (See Top 100 in Electronics) #79 in Car Amplifiers
Date First AvailableNovember 9, 2023
Connectivity TechnologyRCA, Bluetooth
Controller TypeAndroid
Compatible DevicesSmartphone, Speaker
Connector TypeRCA
Number of Channels8
Output Wattage50 Watts
Supported Internet ServicesMaps
Control MethodApp
Weight1 pounds
First AvailableNovember 9, 2023

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