The 3-in-1 audio system reference design is a full featured high end audio solution that can be configured into three separate audio solutions:

  • Smart Speaker with Alexa voice control and commands
  • A powered speaker solution
  • A sound bar solution

The design offers all standard audio input formats including Bluetooth and Wi-Fi audio streams as well as configurable speaker outputs including the ability add wireless subwoofers, wireless surround speakers, and/or wireless speaker pairing (depending on the configuration).

The design uses either Renesas D2-3 or D2-6 family of Audio ICs. These are complete System on-Chip (SoC) audio processors and Class-D amplifier controllers. Integrated DSP processing and configurable audio processing algorithms provide an extremely flexible platform for feature rich and cost-effective quality audio solutions for consumer electronics applications.

The design also features the Renesas RX65N microcontroller. The RX Family is the new generation of microcontrollers built around the revolutionary RX core, which combines the strengths of RISC and CISC architectures. Products in the RX Family feature integrated digital signal processor (DSP) and floating point arithmetic processor modules. The RX600 series is optimized for high speed and superior performance.


  • Audio Performance
    • Amp Freq Response: 20Hz to 20kHz, +/-0.5dB
    • THD+N: < 0.3%
    • SNR: > 110dB (ref Full Power)
  • Audio Inputs Available
    • RCA Phono Jack
    • XLR/TRS Combicon
    • Coaxial S/PDIF
    • USB Audio Streaming
  • Wireless Connectivity
    • WiFi w/"Alexa" Voice Control
    • Bluetooth 4.2
  • App Control
    • Portable app code for iPhone or Android OS
  • System Microcontroller
    • Renesas RX65N
  • Audio DSP Engine
    • Renesas D2-3 or D2-6 family Audio Processor
    • Configurable sound stream using D2 Audio Customization GUI
    • Optional Dolby Digital, Dolby Digital Plus, and/ or DTS decoding
  • Audio Outputs Available
    • GaN FET Power Output Stage
    • Stereo Digital Output: Coaxial Digital
    • Wireless Subwoofer link available
    • Wireless Surround Sound or Stereo Speaker pairing available



Type Title Date
Datasheet PDF 1.63 MB
Manual - Development Tools PDF 592 KB
2 items