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Pro-Ject Pre Box S2 Digital Pre and Headphone Amplifier


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Found it cheaper? Click here. SKU: PJCPBS2
Ex VAT: £245.83

Pro-Ject's digital micro preamplifier with MQA and DSD512 support featuring dual mono construction and ESS Sabre ESS9038 dual DAC.

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Warranty length 2 Years
Brand Pro-Ject

Tech Specs

- Digital In: Coax (S/PDIF), Optical (TOS), USB B
- DAC: 2x ESS9038Q2M 32-bit PCM 768kHz
- Headphone amplifier chip ESS9602
- Rate: 32/44/48/88/96/176/192/352/384/768kHz
- DSD support: 64, 128, 256 and 512
- MQA support: full MQA unfolding by hardware
- Filter settings: 7 different selectable on front
- Frequency response: 20Hz - 20kHz
- Analog out: 6.3mm Headphone, Variable (RCA)
- Output voltage: 2.05 Veff
- Headphone output power: 68mW (32Ohms)
- THD: 0,0003%
- Dynamic Range: 124dBA
- Power consumption: 5V, micro USB
- Dimensions (WHD): 103 x 36 x 103mm
- Weight: 600g w/o power supply

Product Description

Pro-Ject Pre Box S2 Digital Pre and Headphone Amplifier marks a new era for S-series components. For the very first time, Pro-Ject uses a dual mono configuration with the highest class D/A converters of ESS Sabre.

Flagship DAC

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 Pro-Ject's devices to support hardware MQA unfolding. It’s also the premiere of the proprietary Optimum transient digital filter and clock circuitry design.

Great Quality

Digital audio is the art of time, with the new proprietary clock design, Pro-Ject have managed jitter rates of unrivaled 100 Femtoseconds, this easily outperforms many renowned and respected audiophile clock generators! With organic polymer capacitors and thin film miniMELF resistors, they were able to create a tiny device blows away even much bigger components for a much higher price. With a total of seven digital filters, the sound can be shaped precisely to the listener's liking.


Pre Box S2 Digital can be fully controlled remotely, you can also control the playback software of a computer. You can use Play, Pause, Forward and Rewind straight with your Pre Box S2 Digital!

Key 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 (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

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