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Pro-Ject Pre Box S2 Digital Black Micro Pre-Amplifier

Pro-Ject Audio

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Brand-new, unused, unopened and undamaged item in original retail packaging (where applicable).


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Digital micro pre-amplifier with MQA and DSD512 support

a performance revolution in a small package!

Pre Box S2 Digital marks a new era for the Pro-Ject S-series components. For the very first time they are using a dual mono configuration with the highest class D/A converters of ESS Sabre. Their flagship DAC-chip ensures highest class audio in a small and affordable package. This DAC is capable of high resolution audio up to 32bit/768kHz PCM and DSD512! Pre Box S2 Digital is also the very first of the Pro-Ject devices to support hardware MQA unfolding. It’s also the premiere of their proprietary Optimum transient digital filter and Pro-Jects proprietary clock circuitry design. Digital audio is the art of time, with our new proprietary clock design they have managed jitter rates of unrivalled 100 Femtoseconds, this easily outperforms many renowned and respected audiophile clock generators!

With organic polymer capacitors and thin film miniMELF resistors Pro-Ject were able to create a tiny device that will blow away even much bigger components for a much higher price. With a total of eight digital filters the sound can be shaped precisely to the listeners liking. Pre Box S2 Digital is fully remoteable, it can also control the playback software of a computer. You can use Play, Pause, Forward and Rewind straight with your Pre Box S2 Digital!

  • Tick Dual mono construction
  • Tick High end ESS Sabre ESS9038 dual DAC
  • Tick Proprietary clock circuity design
  • Tick Organic polymer capacitors and thin film miniMELF resistors
  • Tick MQA hardware decoding
  • Tick DSD64, DSD128, DSD256 & DSD512 (DoP, DSD512 native)
  • Tick Up to 24bit/192kHz for optical & coax inputs
  • Tick 8 selectable digital filter characteristics
  • Tick 1 proprietary optimum transient digital filter
  • Tick Headphone output on the front (6.3mm)
  • Tick Synchronization of all internal oscillators
  • Tick Jitter as low as 100 Femtoseconds!
  • Tick Gold plated four layer PCB
  • Tick Full alu/metal sandwich casing in silver or black

While we do our best to keep this information up to date, please be aware that all specifications are subject to change by the manufacturer at any time.

Digital Inputs 1x USB (B), 1x Co-axial (RCA), 1x Optical (TOSLink)
D/A-converter 2x ESS9038Q2M 32-bit
USB up to DSD512 (DSD1024), PCM up to 32b/768kHz
Optical PCM up to 24b/192kHz
Coaxial PCM up to 24b/192kHz
Filter Settings 7 different selectable on front
Frequency Response 20 Hz - 20 kHz
Analogue Outputs 6.3mm Headphone (front), 1x Variable Out (RCA
Output Voltage 2.05 Veff
Minimal Recommended Headphone impedance 8 Ohm
Headphone Output Power 6.6 mW / 600 Ohm; 68 mW / 32 Ohm
THD 0.0003% @ 0 dB, 2V RMS, 1 kHz
Dynamic Range 124 dBA
Outboard Power Supply 5V/1A DC (included)
Dimensions W103mm x H37mm x D122mm (including knob and connectors)
Weight 366g (without power supply)

While we do our best to keep this information up to date, please be aware that all specifications are subject to change by the manufacturer at any time.

Pro-Ject Pre Box S2 Digital Silver Micro Pre-Amplifier

Pro-Ject Pre Box S2 Digital Silver Micro Pre-Amplifier


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This item is special order and will required additional time to dispatch.

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When in stock:

This item is available dispatch Monday to Friday, subject to cut-off times and excluding public holidays. Next working day and weekend deliveries available.

Delivery is available to most addresses within the United Kingdom. Some services may not be available to all postcodes. More information is available at the basket and on our delivery page.

We do not dispatch orders to addresses outside of the United Kingdom.

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