Radsone is a Korea company that is famous for their bluetooth receiver, ES100. Recently, they released the HUD100. I would like to thank Radsone for the review unit of HUD100. More information of HUD100 can be found on Radsone.


  • Inputs: USB Type-C
  • Outputs (3.5mm):
    • Standard: 0.914 Vrms
    • High Power: 2.26 Vrms
  • THD+N
    • Standard: -105 dB (0.00056%)
    • High Power: -102 dB (0.00079%)
  • Dynamic Range:
    • Standard: 118 dB
    • High Power: 118 dB
  • Sample Rates: Up to PCM 32bit 384KHz, DSD128 (DoP)
  • DAC Chip: AK4377
  • Desktop Compatibility:
    • MAC OS 10.10 or later
    • Windows 7 (32/64bit) or later
  • Mobile Compatibility:
    • IOS 10.3.3/iPhone 6 or later
    • Android 6.0 or later
  • Dimensions: 45 x 32 x 8mm
  • Weight: 21.5g

Unboxing & Accessories

The HUD100 comes in a grey package which sports the brand logo, image of HUD100 and model name. There are specifications at the sides of the package. After opening the package, there are the HUD100, instruction manual,leatherette travel pouch and USB Type C to A (1m & 10cm).


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Page 2: DAC Build & Design