Radio Design Labs HR-DSX4
4x1 Digital Audio Selector, S/PDIF


Our Price: $663.72
List Price: $887.85
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Radio Design Labs' HR-DSX4 is a great choice in installations requiring high quality source selection between digital audio signals. Solid-state switching is used to select one of four inputs. Each input may be fed through one of three jacks: S/PDIF optical, S/PDIF (or AES-3ID) coaxial or AES/EBU. The output is switch-selectable to provide an AES/EBU, S/PDIF coaxial, S/PDIF optical or AES-3ID output. The switch enables the appropriate output jack and any required electrical and data format conversion. The AES/EBU inputs and output are 110 O terminated; the S/PDIF coaxial and AES-3ID signals connect through 75 O terminated phono jacks. RDL’s proprietary Sure-Lok™ auto recovery supervision monitors possible causes of latch-up and reinitiates signal lock to provide highly stable operation in the variety of conditions encountered in professional environments.

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.

The front panel features four high-reliability, keyboard-style source selection pushbuttons with corresponding LEDs. Upon selecting a source, the LED lights if a valid input is present; otherwise it flashes. If the button for a selected source is pushed again, all inputs are turned off. A front-panel LOCAL/REMOTE switch enables either the front-panel buttons or the rear-panel remote control terminals provided on detachable terminal blocks. In the REMOTE mode, inputs are selected by an external switch or open-collector closure to ground, which may be momentary or continuous. When a source is selected, the HR-DSX4 provides a 50 mA open-collector output to control other equipment or modules. The HR-DSX4 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.


  • 4 x 1 Digital Audio Selection with Signal Reclocking
  • Each Input: AES/EBU, Coaxial or Optical S/PDIF
  • Output: AES/EBU, Coaxial or Optical S/PDIF
  • Format Conversion for Selected Output Format
  • Operation Up to 24 bits, 192 kHz
  • Exclusive Sure-Lok Auto-Recovery Sentinel
  • Transformer Isolated AES/EBU Inputs and Output
  • Local or Remote Controlled Switching
  • Open-Collector Output for Selected Input
  • Input LED Flashes if Valid Input is Not Connected
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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