Radio Design Labs HR-DDA4
Digital/Analog Distributor, AES/EBU


Our Price: $640.75
List Price: $857.14
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Radio Design Labs' HR-DDA4 is the perfect 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. It 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 Ohm terminated; the S/PDIF coaxial and AES-3ID jacks are 75 O 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.

NOTE: Radio Design Labs' PS-24AS power supply is NOT included but is required in order to power this product.  Please see the "Accessories" tab or click here for more information on the PS-24AS power supply.

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
24 VDC 500mA Switching Power SupplyRadio Design Labs PS-24AS 24 VDC 500mA Switching Power Supply

Radio Design Labs' PS-24AS is a 24 Vdc switching power supply with a North American AC plug.  500 mA, dc plug.Specifications: Input: 100 to 240 VACOutput: 24 Vdc, 500 mA (UL, CSA)Dimensions: 1.65" x 2.75" x 1.45" (4.2 x 7 x 3.7 ...

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