Pro-Ject Pre Box S2 Digital Pre-Amp

Pre Box S2 Digital
Digital micro preamplifier with MQA and DSD512 support


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Conclusion: "A tiny DAC and headphone amp that's big on features"


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Description

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 pack-age. 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 pro-prietary 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 seven digital filters the sound can be shaped precisely to the listeners lik-ing. 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!

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

Technical Specifications:
 

• 3 digital inputs 1x coax (S/PDIF), 1x optical (TOSlink®), USB B
• D/A-converter 2x ESS9038Q2M 32-bit PCM 768kHz / DSD512
• Headphone amplifier chip ESS9063
• 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
• Powerconsumption 5V, micro USB
• Dimensions W x H x D 103 x 36 x 103 mm
• Weight 600g without power supply