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Model D3042

30W 4-Ch Input / 6-Ch Output Bluetooth Audio DSP Compact Amplifier

The D3042 30W-per-channel multichannel DSP amplifier features a compact size that allows installation in a wide range of vehicles, including cars, SUVs, motorcycles and boats. The system integrates Bluetooth technologies making it reality to have true individualized experience of audio amplifier configurations for everyone, not just audiophiles. Consumers can simply set their audio preferences by smart phones, making it real individualized audio experiences.


D3042 Car Audio DSP Amplifier


Key Features

  • Most cost-effective product suitable for almost all car audio amplifiers systems.
  • Multichannel audio DSP processing to promote faithful audio reproduction.
  • Compact size with Class D amplifiers allowing installation in a wide range of vehicles, including cars, SUVs, motorcycles and boats. 
  • Bluetooth BLE4.2 technologies integrated, supported by smart phone application programs (mobile apps), making individualized audio experience a true reality.
  • 4-channel inputs, 4-channel outputs at 30W each channel and 2-channel line outputs.
  • 30W RMS @ 14.2V each channel; SNR: 76dB @1W; >94dB @1VRMS line out; THD+N: 0.045% @1W, 1kHz filter off; Frequency Response:23~22kHz.




Inputs, Total 4 Channels  
  High Level Input   4 Channels  
  Low Level Input   n/a  
  Coaxial Input   n/a  
  Optical Input   n/a  
  Bluetooth Music Input   n/a  
  APTX Support   n/a  
  Aux Input   n/a  
Outputs, Total 6 Channels  
  Power Output   4 Channels 30W each channel
  Line Output   2 Channels  
Power 30W RMS x 4 4-Ω load & 1% THD+N, Ref 14.2V
Audio Amplifier Class D  
Load or Bridgeable 4-Ω load, not bridgeable  
SNR @ 1W 76 dB  
SNR @ 2V RMS (Analog In) 96 dB  
SNR @ 2V RMS (Digital In) n/a  
THD+N @ 1W 0.045% @ 1kHz, filter off
Frequency Response 23 ~ 22kHz +/- 3dB
Remote Control n/a  
Smartphone Mobile Apps iOS and Android for consumers and professional installers
PC Software Yes for professional installers
iPad Application Software Optional for professional installers
EQ Processing 15 ~ 31 Bands PEQ & GEQ
Crossover (XOver) up to 48 dB/Octave each channel independently
Level each channel independently  
  overall volume  
  independent subwoofer volume  
Phase 0°, 180° setting each channel independently
Delay up to 25 ms each channel independently
Channel Routing Input / Output Routing  
Pink Noise Generator Optional  
Advanced Algorithms Bass Boost optional
  Voice Enhancement optional
  MP3 Enhancement optional
Dolby & DTS Dolby Digital contact us
  Dolby ProLogic 2x contact us
  DTS ES contact us
  DTS Neo:6 contact us
  DTS Neural Surround contact us


Product Software

For the Model D3042, like all of our DSP-based car audio products, we offer software tools for our customers. The PC software program and iPad application program are used to install the DSP software and tune the amplifier performance. These are designed to be used by professional installers. Meanwhile, the D3042 is among our latest products featuring Bluetooth technologies. For end users we have mobile application programs (mobile apps), both iOS and Android. Easily with their smartphones, car amplifier consumers have full freedom to setup their very own audio performances and preferences.

In summary, our software for this product include:

  • PC Software for Automotive Audio Amplifiers and Audio Processors: USB connection, designed for professional installers
  • iPad Software for Automotive Audio Amplifiers and Audio Processors: Bluetooth connection, designed for professional installers
  • iOS Mobile Application Program (Mobile App): Bluetooth connection, designed for consumers or professional installers
  • Android Mobile Application Program (Mobile App): Bluetooth connection, designed for consumers or professional installers


Software for D3042 Car Audio DSP Amplifier


Wiring Harness and Accessories

With compact design, the Model D3042 is a multichannel audio amplifiers suitable for a number of different automobiles. Each car or SUV may need different wires and different connect harness or accessories. Please click below for the right selection of wiring and harness set for your vehicle:

Feel free to contact us if your vehicle is not on the list yet.


Related Products

For other Zhongshan HLH car audio products, please refer to:


Product Documents



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Dongguan HLH Electronics, Co., Ltd.


Dongguan HLH Electronics Co., Ltd.

   Keji 8th Road
      Songshanhu Internet of Cars Industry Incubate Base
      Room 201, Building 1
      Dongguan, Guangdong 511700