• 9 Inputs: USB, AES-EBU, optical (Toslink), coax (S/PDIF)
  • DSD (up to DSD128) capability (DSD over PCM)
  • Tube output stage & solid-state output stage (switchable)


How To Buy

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Our preferred option is for you to visit a nearby store and buy what you need locally. Our authorised stockists are some of the finest specialist hi-fi retailers in the country, and they're equipped to give you the best after-sales and set-up advice possible - all in person. To find your local retailer, either click the 'Buy In-Store' button on your product page for exactly the right recommendation, or head to our comprehensive Where To Buy tool.

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The advanced DAC Box RS is a reference-class D/A converter for all kinds of digital stereo sound sources. It superbly acts as a superior USB audio interface for demanding computer audio, also features AES/EBU input and I²S interface for use with CD Box RS. For the engaged audiophile we provide full DSD capability (up to DSD128) over PCM. All inputs fully support 24/192kHz HD music data (optical inputs 96/24) in fully asynchronous mode.

Additionally DAC Box RS incorporates a pair of the best audio grade DAC chips, PCM 1792, which only can be found in expensive high-end designs. 2 different digital filter settings are selectable to meet your favourite sound preferences. Additionally we realized that its also depending on customers taste and type of music/recording, what technology for the output stage is preferable. More warm and relaxed sounding with Tubes or Solid State Class A with limitless details and dynamics. The DAC Box RS has both options to select.

The whole audio circuitry design is ultra low noise and ultra linear with very low output impedance to avoid any negative interference with cables or pre-amps. Due to its class-leading audio performance DAC Box RS is an ultimate high-end bargain!

Available in Black or Silver casework.

Key Features:

  • Double top grade PCM-1792 D/A chip from Texas Instruments
  • 9 Inputs: USB, AES-EBU, optical (Toslink), coax (S/PDIF)
  • DSD (up to DSD128) capability (DSD over PCM)
  • I²S interface for CD Box RS (sonic2data transfer technology) with additional clock synchronisation port (BNC)
  • 2 selectable digital filter settings
  • Fully balanced analogue audio circuitry
  • Tube output stage & solid-state output stage (switchable)
  • Ultra linear & ultra low noise circuitry
  • IR remote control included
  • XLR & RCA line level output sockets
  • Full metal casing in silver or black

Technical Data

D/A Converter: Texas Instruments PCM-1792
8 x Oversampling Design
Sampling Rates: 32kHz
192 kHz
(Except Optical Up to 96kHz)
Selectable Filter Settings: "Steep" and
"Optimum Phase"
Digital Inputs: 2x Coax (S/PDIF)
4x Optical (Toslink®)
1x Type-B USB
1x I²S
Output Stages:  6922 Tube & Solid State (Switchable) 
Analogue Output: 1x RCA/Cinch & XLR
THD Solid State Out:  0.005% 
THD Tube Out:  0.25% 
Signal To Noise:  100dB 
Output Voltage: Max. 4/2V eff.
Power Consumption: Standby: < 1 Watt
Maximum: 800/300mA
Power Supply: 20V / 3A DC
Dimensions: 206 x 72 x 200mm
206 x 72 x 220mm (Incl. Sockets)
Weight: 1010g (Without PSU)


Firmware Update:

For DAC Box RS and Pre Box RS Digital units sold before October 2014 there is a firmware update available that adjusts the USB output settings. This update optimises the DAC to work as your main computer audio output device, if that's what you require. This update makes no change to the overall sound quality of the USB port.

The download is available in the links below (DAC Box RS Firmware Update (220814)). When you download the zip file, there will be a PDF guide included to show you how to run the update. This is only possible on Windows machines with the Pro-Ject Drivers installed.

For more help and advice visit our Tech Support section

Note: We’re constantly updating our website to ensure all our listings are as accurate as possible. However, the images and text on this page can be subject to change without notice, and errors and omissions are excepted.

If you have any questions, please contact us.
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