DAC Box RS2 is based on the incredibly successful Pre Box RS2 Digital but without the preamp section, leaving just an audiophile stand-alone D/A converter. It uses the same excellent-sounding DAC chips (dual-mono) as the aforementioned and represents the perfect option for anyone looking for a modern DAC with a plethora of digital inputs and a fully balanced circuitboard design.

The dual-mono configuration features the highest-class D/A converters from Sabre. ESS9038Q2M chips provide optimal price-to-performance among high-end designs so that DAC Box RS2 is within reach for most digital enthusiasts with no sacrifice to sonics. The dual DACs also benefit from their own dedicated signal path (separate signal paths for the left and right channels). Thanks to these converters, DAC Box RS2 supports up to 32bit/768kHz files in PCM and DSD formats (up to DSD512) via USB, supporting any digital file you can buy or stream. The fixed analog output can be switched between solid-state and tube, further setting this unit apart from the competition.

DAC Box RS2 has eight digital filters, one being the proprietary ‘optimal transients’ digital filter from the MQA creators. With these filters, the listener can customize the sound to suit their own preferences. It comes with full HW and SW support for MQA technology (Master Quality Authenticated). The USB input signal is processed by a powerful multi-core XMOS microcontroller with advanced Multi-Core RISC architecture. The CPLD MAX II (Complex Programmable Logic Device) Altera is used for re-clocking, which together with the XMOS microcontroller brings high-quality processing of both conventional digital information and MQA. For the ideal use of this technology, it is best to connect the DAC Box to our Stream Box S2 Ultra in conjunction with the TIDAL service. You can also enjoy MQA quality by linking it with our revolutionary CD transport (CD Box RS2 T), which can be connected to DAC Box RS2 with the reliable I²S differential bus via the HDMI connector.

A premium aluminum remote control is included in the package and DAC Box RS2 is available in a high-quality silver or black aluminum case. The sizeable display on the front shows all relevant information in a structured, easy-to-read manner. Navigating the menu is a snap, allowing for easy experimentation among settings. DAC Box RS2 is also Roon-ready for your convenience.

*Note: I2S ins/outs featured in our RS2 series (Pre Box RS2 Digital, DAC Box RS2, CD Box RS2 T) communicate with other Pro-Ject RS2 components only. They are not universal and will not function with other brands’ I2S-capable components.

Additional information
Weight 1.52 kg
Dimensions 22.2 × 20.6 × 7.2 cm



  • Dual Mono DACs: 2x ESS9038Q2M
  • Roon ready
  • High Quality optionally selectable upsampling of PCM and/or MQA content with propriatory filtering
  • Advanced re-clocking powered by new XMOS chip with Mulit-Core RISC architecture
  • 6 digital inputs: asynchronous USB, i²S HDMI, AES/EBU, Toslink, S/PDIF coax
  • Fully balanced double mono design
  • Output stage switchable between 6922 tube & solid state
  • Ultra-linear and ultra low noise
  • New high-quality display with responsive and fast UI design
  • High quality full Aluminium remote control included
  • Available in silver and black
  • Handmade in Europe



  • Frequency response: 20Hz – 20kHz (-0,1dB, -0,2dB)
  • Output voltage: 2,0V RMS – 0dBFS on digital inputs /RCA output
  • Output voltage: 4,0V RMS – 0dBFS on digital inputs /XLR output
  • Sampling rates: 32/44,1/48/88,2/96/176,4/192/352,8/384/705,6/768 kHz
  • DSD support: DSD64, DSD128, DSD256 and DSD512 (DoP, DSD512 native)
  • MQA support: full MQA decoding by hardware from all digital inputs
  • Dynamic Range: 124dBA
  • Channel separation: > -117dB at 10kHz@0dB
  • SNR (20Hz – 20kHz): > 113dB at 0dB
  • THD: 0.0005% solid state output/ 0.03% tube output, @ 2V RMS, 1 kHz
  • THD (20Hz – 20kHz): < 0.0008% @ 0 dB, 2V RMS THD+N (20Hz – 20kHz): < 0,001%
  • USB data transfer: Asynchronous, DSD DoP, DSD Native DSD512 support and PCM up to 32b/768kHz
  • S/PDIF optical input: 2 x (24bit / 192kHz)
  • S/PDIF coaxial input: 1 x (24bit / 192kHz)
  • AES/EBU 1 x (24bit / 192kHz balanced)
  • I²S: for connection with CD Box RS2 T using supplied HDMI cable
  • Master clock output 16.9344 MHz for CD Box RS2 T
  • Digital to Analogue converter: 2 x ESS9038Q2M 32-bit (dual mono)
  • Filter settings: 8x digital filter
  • Output buffer: discrete and balanced, tube and solid state
  • Tubes: 4 x 6922EH
  • Display: 3,5” TFT module, 480×320, 360 cd/m2, contrast ratio, 700, IPS technology
  • Analog outputs: Variable balanced output1 x XLR connectors, Variable unbalanced output 1 x RCA
  • Trigger sockets: 2 x 2,5mm 2-pole (1 x Trigger In, 1x Trigger Out)
  • Outboard power supply: 20V/3A DC, suitable for your country’s mains supply
  • Power consumption: max. 1A DC, <0,5W in standby


“The Pro-Ject CD Box RS2 Transport and Pre Box RS2 DAC punch way above their weight” – Steven Guttenberg Audiophiliac