The sophisticated AK4490 D/A converter from Asahi Kasai Microdevices together with the AK4137 sample rate converter are responsible for outstanding resolution, soundstaging, ‘air’ & imaging of Pre Box DS2 Digital. Control over upsampling of all incoming digital signals to PCM 768kHz/DSD256 with the ‘Sound Modes’ button allows you to shape what you hear based on your preferences. Three sound modes and five digital filters amount to fifteen total listening experiences at your fingertips! Adding an MM/MC-capable phono preamplifier as well as a line-level input for another analog source makes Pre Box DS2 the picture of versatility at no expense to sonics. It doesn’t stop there, however… Four analog outputs (fixed, variable, subwoofer, headphone) together with S/PDIF optical digital, asynchronous USB and aptX Bluetooth make Pre Box DS2 digital more versatile still. It fulfills every need the modern audiophile might be confronted with.

Additional information
Weight 157 kg
Dimensions 22 × 206 × 71 cm

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  • Phono stage (MM/MC), line in on board
  • 5 digital Inputs: 1x USB, 2x optical, 1x coax, 1x Bluetooth (aptX)
  • Top grade AK4490 D/A chip (32-bit PCM 768kHz / DSD256)
  • Up to 32bit/768kHz asynchronous USB (XMOS technology)
  • DSD64, DSD128 & DSD256 (DSD over PCM)
  • Up to 24bit/192kHz for optical & coax inputs
  • 5 selectable digital filter characteristics
  • 3 selectable sound modes
  • Headphone output on the front (6.3mm)
  • High-end ultra low phase oscillator with superior noise rejection
  • RCA line level solid-state analogue output stage
  • Ultra linear & ultra low noise circuitry
  • Full alu/metal sandwich casing in silver or black
  • Optional wooden side panels available!
  • Handmade in Europe


  • 2 analogue inputs: 1x Line In (RCA), 1x Phono Line In (RCA)
  • Phono input specifications: MM 47kohms/50pF; MC 10ohms
  • Digital outputs: 1x coax (S/PDIF)
  • 2x optical (TOSlink®)
  • 1x USB B
  • 1x Bluetooth(aptX)
  • D/A-converter: AK4490 32-bit PCM 768kHz / DSD256
  • Sampling rate converter: AK4137EQ upsampling to 768kHz
  • Sampling rates: 32/44,1/48/88,2/96/176,2/192/352,8/384/768 kHz
  • DSD support: DSD64, DSD128 and DSD256
  • Filter settings: 5 different selectable on front
  • Frequency response: 20Hz – 20kHz (+0/-1dB)
  • Analogue outputs: 6.3mm Headphone (front)
  • 1x Subwoofer(RCA)
  • 1x Fixed (RCA)
  • 1x Variable Out (RCA)
  • Output voltage: 2,2 V(switchable +6dB gain gives 4,4 V)
  • Minimal recommended headphone impedance: 8ohms
  • Headphone output power: 100mW/8ohms
  • THD: 0,00085%
  • Crosstalk: -117dB (10kHz@0dB)
  • Signal to noise ratio: 113dB (20 – 20.000 kHz)
  • Power consumption: <1 watt standby, 600mA max
  • Outboard power supply: 18V/1000mA DC (included)