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Pro-Ject DAC Box S2+
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Pro-Ject DAC Box S2+Pro-Ject DAC Box S2+Pro-Ject DAC Box S2+

Pro-Ject DAC Box S2+

  (2 Reviews)
£182.50 Exc. VAT |  


Pro-Ject DAC Box S2+

Inspired by the S2 flagship, the Pre Box S2 Digital, the DAC Box S2+ is a fully-equipped digital-analogue converter designed to accomodate the highest demands of the modern digital audiophile. 

With support for PCM files up-to 32-bit / 768kHz and quad-DSD decoding (DSD256) via the rear-mounted USB port, there's very little this compact device can't handle with ease. The clever internal design means unwanted noise entering the system via USB is double-filtered to suppress it to insiginficantly low levels. Fully Hi-Res Audio certified and Roon Tested, the DAC Box S2+ is more than comfortable in far more expensive audio systems. 

For alternative digital sources, the DAC Box S2+ also has an optical input and coaxial S/PDIF input (both limited to 24-bit/192kHz conversion), so nothing should be out of reach - whether you're looking to connect CD players, network streamers or a computer. 

Regardless of the input used, Pro-Ject's proprietary Optimum Transient Digital Filter and complimentary clock circuitry design allows the DAC Box S2+ to manage jitter down as low as 100 Femtoseconds, ensuring the tightest and most capable audio performance possible. The sound can then be tailored to suit any listener's preference thanks to the other four digital filters included with the ESS Sabre ESS9038Pro DAC chip.

The internal layout of the DAC Box S2+ borrows further from the Pre Box S2 Digital design to ensure the best possible performance. Through the clever use of polymer capacitors and thin-film miniMELF resistors it is possible to fit all this technology into such a small chassis. Elsewhere, industry-first innovations in the dual-regulator architecture makes sure the sound performance does justice to the true high-end formats you can play through the DAC. 

Power is provided by the included power supply, but you can upgrade your convenience further by switching to any 5V power bank. Housed within the improved S2 chassis, the overall build, feature list and performance of the DAC Box S2+ is enviable for the price.


  • High-end ESS Sabre ESS9038 DAC
  • Proprietary clock circuitry design
  • Organic polymer capacitors and thin-film miniMELF resistors
  • 32-bit / 768kHz PCM support
  • Up-to DSD256 (DSD over PCM) support
  • Up-to 24-bit / 192kHz support for optical & coax inputs
  • Five selectable digital filter characteristics
  • One filter is proprietary optimum transient digital filter
  • Synchronization of all internal oscillators
  • Jitter as low as 100 Femtoseconds
  • Gold plated four layer PCB
  • Premium S2 chassis
  • Available in black or silver

Technical Data


1x ESS9038Q2M 32-bit PCM 768kHz / DSD512

Digital Inputs: 

1x Coax (S/PDIF)
1x Optical (TOSlink®)
1x USB B

Sampling Rates:


DSD Support:


Filter Settings:

5x Selectable

Frequency Response:

20Hz - 20kHz

Analogue Out:

1x line out (RCA)

Output Voltage:

2.05 Veff



Dynamic Range:


Power Consumption:

5v, micro USB


103 x 37 x 111mm


360g (Without PSU)

Average Rating (2 Reviews):  
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Project DAC Box S2+
Wednesday, 3 February 2021  | 

It is smaller than I thought it would be, but when I played music from myPC through it, I did not care what size it is. It sounds fantastic.

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Does an exellent jobb at this price
Tuesday, 21 January 2020  | 

If you want a small goodsounding dac , look no further . i did try the pre box , but i have no need for a headphone amp and could not hear any diffrence .. even one step up ( rega DAC-R ) and still no differens , not in my audio research preamp , power amp , dynaudio contour 60 setup anyway

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10 of 10 people found this review helpful.

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