Pro-Ject Pre Box S2 Digital - Digital Micro Preamplifier/DAC With MQA and DSD512

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This amazing little DAC was part of my personal home setup before we purchased our full SkyFi building and shop. 

It features a dual mono design, and 2 x high end ESS Sabre ESS9038 DAC's

I picked this DAC because it has a gorgeous OLED display and is super simple to operate. It was excellent for streaming far away radio stations while I was working, as well as playing my collection of High-Res DSD files.

Now it's time for this find a new home, as I haven't used it since our build-out and move.

It's in amazing condition and the remote was never used as it lived on my McIntosh stack. It comes complete with everything just like it left the factory including the universal AC plug adapters for international use. The box shows some wear as shown in the photos. 

There is also a Male USB Type A to Male USB Type B cable included with your purchase. 

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

More from Pro-Ject:

A performance revolution in a small package!

Pre Box S2 Digital marks a new era for our S-series components. For the very first time we 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 our devices to support hardware MQA unfolding. It’s also the premiere of our proprietary Optimum transient digital filter and our proprietary clock circuitry design. Digital audio is the art of time, with our new proprietary clock design we 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 we 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!

Technical Specifications:
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 W x H x D
103 x 37 x 122 mm (including knob and connectors)

Weight
366 g (without power supply)

Please click here for detailed specifics regarding our specialized packing process that separates us from the rest.