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Pro-Ject Pre Box DS2 Silver Digital Preamplifier
Pro-Ject Pre Box DS2 Silver Digital Preamplifier 0
Pro-Ject Pre Box DS2 Silver Digital Preamplifier 1

Pro-Ject Pre Box DS2 Silver Digital Preamplifier

Model #: Pre Box DS2 Digital-SV
At a Glance
The advanced Pre Box DS2 Digital is an universal and very flexible pre-amplifier and D/A converter of highest class. The built in D/A converter AK4490, from high end manufacturer Asahi Kasai Microdevices, has five different digital filters which let you shape the sound to your preference. It offers full DSD256 support and upsampling of all input signals to 768kHz from USB, coaxial and optical inputs.
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Get to know this product.

This realizes high-resolution sound playback with a rich sound field and bass representation with less distortion. It features five digital inputs as well as analogue line level input and phono line in. The Bluetooth receiver supports aptX for best wireless sound conversion. That makes it suitable for any source available. One variable, one fixed analogue output and also one to connect the Pre Box DS2 Digital to your subwoofer are available. The sample rate converter (AK4137) features three different settings (sound modes). All that makes the Pre Box DS2 Digital the most versatile audiophile pre-amplifier D/A converter in its price range!

Due to its class-leading audio performance Pre Box DS2 Digital is an ultimate high-end bargain!


  • 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!

Technical Specifications

2 Analog Inputs1x Line In (RCA), 1x Phono Line In (RCA)
5 Digital Inputs1x coax (S/PDIF), 2x optical (TOSlink®), USB B, Bluetooth(aptX)
D/A -ConverterAK4490 32-bit PCM 768kHz / DSD256
Sampling Rate ConverterAK4137EQ upsampling to 768kHz
Sampling Rates32/44,1/48/88,2/96/176,2/192/352,8/384/768 kHz
DSD SupportDSD64, DSD128 and DSD256
Filter Settings5 different selectable on front
Frequency Response20Hz - 20kHz (+0/-1dB)
Analog Outputs1 x 6.3mm Headphone Out (front), 1 x Sub Out, 1 x Fix Out (RCA), 1 x Variable Out (RCA)
Output Voltage2.2 Veff (switchable +6dB gain gives 4.4 Veff )
Crosstalk-117dB (10kHz@0dB)
Signal To Noise Ratio113dB (20 - 20.000 kHz)
Power Consumption<1 Watt standby, 600mA max
Outboard Power Supply18V/1000mA DC (included)
Dimensions W x H x D206 x 71 x 220 mm (Alu); 240 x 72 x 220 mm (Wood)
Weight1570 g (Alu) without power supply; 2000 g (Wood) without power supply

Misc. Specs

Product Weight (lbs.)2.2000
Depth (in.)7.87
Width (in.)8.11
Height (in.)2.83
Analog Audio(RCA) Input2
Color Finish NameSilver
WarningProposition 65 Warning for California Residents