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Tributaries ELEC-AC300

Audio convertor/ Dolby Decoder

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  • Digital Audio Convertor with Dolby® Decoding
  • 2 connections: Toslink® optical to analog R/L audio
  • Uncompressed digital LPCM stereo of Dolby® Digital 501 Ch audio
  • Supports audio sampling rates of 48kHz (Dolby® Digital)/96kHz/48kHz (LPCM)
  • S/PDIF bitstream 24-bit of data for left & right channel
  • Powered by USB
  • Includes USB cable and cube USB power supply




The Tributaries AC300 is An Optical to Analog Audio Convertor DAC with Dolby® Decoding. This unit provides an ideal solution for converting an optical signal to analog stereo audio. With audio sampling rate support up to 48kHzand I/O data rate support up to 24-bit, the AC300 provides high quality sound conversion that guarantees the Dolby digital audio signals are down-mixed to analog stereo without loss of quality. Powered by USB power, the AC300 is easy to install and use





• Coverts Dolby® Digital formatted audio into stereo analog audio


• Perfect for HDTVs with digital audio output and analog audio amplifier inputs


• Supports LPCM 2CHaudio sampling rates from 32 to 96kHz (32, 44.1, 48, 88.2 & 96kHz)


• Supports uncompressed digital LPCM stereo or Dolby® Digital 5.1CH audio inputs


• Supports Dolby® Digital 5.1CH audio sampling rates of 48kHz


• Supports S/PDIF bitstream 24-bit of data for left & right channels


• Compact design and easy to install and use





Input Ports




Sample Frequency


32KHz, 44.1KHz, 48KHz, 88.2KHz and 96KHz


Output Ports


L/R Analog Audio


L/R Input Impedance


47K Ohms


L/R Output Impedance


47K Ohms


Power Supply


USB Power Cube: Input: 120V Output: 5V/1A DC (UL certified)




2..125” (W) x 3..25” (D) x .75” (H)




1..625 oz.


Operating Temperature


32°F — 104°F


Storage Temperature


-4°F — 140°F




While Tributaries® has made every reasonable effort to ensure the accuracy of these specifications, information contained herein may be subject to error and omission and to change without notice. Tributaries provides these specifications on an “AS IS” basis, with no representations or warranties, whether express, statutory or implied.

Stocking information


Stock Code





DAC with Dolby® Decoing





Color -
Height (inches) No
Width (inches) No
Depth (inches) No


More Info