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 outputstage 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

Additional information
Weight 1.89 kg
Dimensions 21 × 20.6 × 7.2 cm



  • Dual top grade PCM-1792 D/A chips from Texas Instruments
  • 9 Inputs: USB, AES-EBU, optical (Toslink), coax (S/PDIF)
  • 24bit/192kHz asynchronous USB (XMOS technology)
  • 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
  • DC power supply (< 1 watt standby power)
  • Full metal casing in silver or black
  • Handmade in Europe


  • Tubes: 2 x ECC88 (6922)
  • Frequency response: 20Hz – 50kHz (0dB/-1dB)
  • Noise floor: 100dB (A weighted)
  • THD: class-A output stage 0,005% / tube output stage 0,25%
  • 2 x coaxial (S/PDIF)
  • 1 x balanced (AES/EBU)
  • 4 x optical (TOSlink®)
  • 1 x In Sonic (I2S* – RJ45 socket)*
  • 1 x USB (B socket), USB cable supplied
  • USB input: digital serial data protocol USB 2.0
  • Operating systems 24Bit/kHz192 playback: Windows XP®, Windows VISTA®, Windows 7® , Windows 8®, Mac OS®
  • DSD playback: Windows VISTA®, Windows 7® , Windows 8®, Mac OS®
  • D/A converter: 2 x Texas Instruments PCM1792 192/24 in Differential-Mode
  • Supported audio format: PCM (LPCM), DSD 64 und DSD 128, no support for formats like Dolby® Digital or DTS™
  • Sampling rate, coaxial inputs: up to 192kHz/24bit
  • Optical inputs: up to 96kHz/24bit
  • Balanced input: up to 192kHz/24bit
  • USB input: up to 192kHz/24bit + DSD 64 and DSD 128
  • USB mode: asynchronous
  • Line-level outputs: 1 pair RCA sockets and 1 pair XLR
  • Wiring XLR sockets: 1 ground, 2 “hot” and 3 “cold”
  • Output voltage typically: RCA/phono sockets 2Vrms / XLR sockets 4Vrms at 1kHz
  • Clock out: BNC socket, 16.9344MHz*
  • Outboard power supply: 20V/3A DC; suitable for your country’s mains supply
  • Power consumption: class-A output stage 300mA DC / tube output stage 850mA DC, <1W in standby

*With Pro-Ject CD Box RS only.