Digital Audio Distributor – 1×4


The HR-DDA4 is the ideal choice in installations requiring high quality distribution of a digital audio signal. The input and each of the four outputs support AES/EBU, S/PDIF or AES-3ID formats. The HR-DDA4 automatically detects a valid input on any of the four input jacks: S/PDIF optical, S/PDIF coaxial, AES-3ID or AES/EBU. The input is decoded, reclocked and retransmitted to four individually buffered outputs. Front-panel LEDs display the digital audio format and sample rate of a valid source received without any phase-lock or bit errors.

Each output is switch-selectable to provide an AES/EBU, S/PDIF coaxial or AES-3ID output. The switch enables the appropriate output jack and any required electrical and data format conversion. The AES/EBU input and outputs are 110 Ω terminated; the S/PDIF coaxial and AES-3ID jacks are 75 Ω terminated.

The HR-DDA4 is powered from 24 Vdc, which may be connected through the detachable terminal block or through the dc power jack. A front-panel power switch is provided.

RDL's proprietary Sure-Lok auto recovery supervision monitors possible causes of latch-up and reinitiates digital signal lock, bringing a high level of stability to digital audio signal distribution under the variety of conditions encountered in professional environments.

  • 1 x 4 Digital Audio Distribution for All Formats
  • Input: AES/EBU, Coaxial or Optical S/PDIF, AES-3ID
  • Each Output: AES/EBU, S/PDIF or AES-3ID
  • Format Conversion for Selected Output Format
  • Operation Up to 24 bits, 192 kHz
  • Exclusive Sure-Lok™ Auto-Recovery Sentinel
  • Transformer Isolated AES/EBU Input and Outputs
  • Digital Signal Reclocking
  • Sample Rate Indicator
  • Digital Signal Lock Indicator for Each Input Format
  • ~Inputs (4):|110 Ω AES/EBU XLR, transformer isolated;
    S/PDIF optical; 75 Ω S/PDIF coaxial phono jack; 75 Ω AES-3ID BNC|~Outputs (12):|110 Ω AES/EBU XLR (4), transformer isolated;
    75 Ω S/PDIF coaxial phono jack (4);
    75 Ω AES-3ID BNC (4)|~Selector (4):|Rear-panel output format selector (1 per output)|~Sample Rate:|32 kHz to 192 kHz|~Resolution:|16 to 24 bits|~Indicators (12):|POWER LED; INPUT FORMAT LEDs (2); Sample Rate LEDs (9) |~Standards:|AES3-2003, IEC60958|~Ambient Operating Environment: |0° C to 50° C|~Power Requirement:|GROUND-REFERENCED 24 Vdc @ 50 mA|~Package Type:|Cardboard Box|~Package Dimensions:|9.5 x 7 x 2.25 in.|~Shipping Weight:|2.515 lbs.|~WEEE weight:|2.16 lbs.|~Tariff code:|8518.40.2000

    Additional information

    Weight 2.515 lbs
    Dimensions 2.25 × 7 × 9.5 in


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