HD51-A DTS Digital Audio decoder DTS/AC-3 Digital Audio decoder,Output 3X3.5mm jack Digital Audio Decoder: Used 24-bit audio DSP Multi-channel audio input Convert DTS/AC3 source digital audio to analog 5.1 audio or stereo audio output. The analog stereo L / R) signals convert to analog 5.1 channel output. Analog 5.1-channel 3x3.5mm) or Stereo output