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Pro-Ject - Pre Box S2 Digital MQA DAC/Preamplifier

Pro-Ject Pre Box S2 Digital MQA DAC/Preamplifier


MQA Decoding, Dual-Mono Design, and High-Res 32-Bit/768kHz and DSD512 Ability: Incredible-Sounding Pro-Ject Pre Box S2 DAC Features Dual Sabre DAC Chips, Proprietary Filter and Clock


Featuring dual-mono configuration and dual ESS Sabre 9038 chips, The Absolute Sound Product of the Year and Editors' Choice Awards-winning Pro-Ject Pre Box S2 MQA DAC brings high-end MQA decoding and immersive audiophile fidelity to the table for a stunningly modest price.


Able to support up to high-resolution 32-bit/768kHz PCM and DSD512, Pre Box S2 comes equipped with Pro-Ject’s proprietary Optimum transient digital filter and clock circuitry. The latter boasts jitter rates of 100 Femtoseconds and outperforms competing products costing three times as much. Its passively filtered USB output drops the noise floor to near-inaudible levels.


Organic polymer capacitors, thin film mini MELF resistors, a gold-plated four-layer PCB, vibration-resistant metal housing, and a total of seven selectable digital filters further contribute to its mesmerizing sound. Just wait until you hear your favorite music with the detail, dynamics, imaging, separation, and soundstaging Pre Box S2 delivers. It’s breathtaking.


The ultra-compact and Stereophile Class A Recommended Pre Box S2 can also double as a preamplifier and comes with three digital inputs and a headphone output. You can control it all with your fingertips or with the optional Control It remote control


“The Pro-Ject Pre Box S2 Digital offers audiophiles a very high-value DAC/digital preamp setup at an almost ridiculously low price. Small…is indeed beautiful.”
—Steven Stone, The Absolute Sound, Product of the Year Award




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 (DSD over PCM)
Up to 24bit/192kHz for optical & coax inputs
7 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




Digital inputs: 1x coax (S/PDIF), 1x optical (TOSlink), USB B
D/A-converter: 2x ESS9038Q2M 32-bit PCM 768kHz / DSD512
Headphone amplifier chip: ESS9602
Sampling rates: 32/44,1/48/88,2/96/176,2/192/352,8/384/768 kHz
DSD support: DSD64, DSD128, DSD256 and DSD512
MQA support: full MQA unfolding by hardware
Filter settings: 7 different selectable on front
Frequency response: 20Hz - 20kHz
Analogue out: 6.3mm Headphone Out (front), 1x Variable Out (RCA)
Output voltage: 2,05 Veff
Headphone output power: 68mW (32Ohms)
THD: 0.0003%
Dynamic Range: 124dBA
Power consumption: 5V, micro US

Pro-Ject - Pre Box S2 Digital MQA DAC/Preamplifier

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