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Pro-Ject S2 Line Silver High Performance DAC and Headphone Amplifier

Model #: Head Box S2 Digital-SV
At a Glance
Head Box S2 Digital comes fully equipped for the highest demands of the modern audiophile. It supports playback for PCM files up to 32bit / 768kHz and DSD decoding up to quad DSD (DSD256). Head Box S2 Digital also comes with five digital filters for soundshaping to the listeners preferences.
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Get to know this product.

Three digital inputs ensure to connect to any source available, be it a personal computer via the USB B input or a TV set via the optical input. The co-axial S/PDIF input takes all data from a digital transport such as the CD Box DS2 T. All inputs offer support for high resolution data up to 24bit /192kHz. The USB input offers full high resolution support for all files up to PCM 32/768 and DSD256. The front seated 6.35mm headphone output delivers a clean and precise sound with a musical touch. Un-wanted noise coming in through USB is double filtered to surpress them to a level where it can’t affect audio to realize an undisturbed listening experience. The new aluminium/metal casing ensures highest aesthetics and protects against vibration and interference! Head Box S2 Digital comes in silver or black.


  • High end ESS Sabre ESS9038 DAC
  • Proprietary clock circuity design
  • Organic polymer capacitors and thin film miniMELF resistors
  • 32bit / 768kHz decoding
  • DSD64, DSD128 & DSD256 (DSD over PCM)
  • Up to 24bit/192kHz for optical & coax inputs
  • 5 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

Technical Specifications

Digital Inputs1x USB (B), 1x Co-axial (RCA), 1x Optical (TOSLink)
D/A Converter1x ESS9038K2M 32 bit
USBUp to DSD256, PCM up to 32b/768kHz
CoaxialPCM bis 24 b / 192 kHz
OpticalPCM bis 24 b / 192 kHz
Filter Settings5 different selectable on front
Frequenc Response20 Hz - 20 kHz
Analog Outputs6.3mm Headphone (front), 1x Variable Out (RCA)
Output Voltage2.05 Veff
Headphone Output Power68 mW /3 0 Ohm, 6.6 mW / 600 Ohm
Minimal Recommended Headphone Impedance8ohms
THD0.0007% at 0 dB, 2 V RMS, 1 kHz
Dynamic Range120 dBA
Outboard Power Supply5 V /1 A DC (included)
Dimensions W x H x D103 x 37 x 122 (including knob and connectors)
Weight360 g without power supply

Misc. Specs

Product Weight (lbs.)0.8000
Depth (in.)4.8
Width (in.)4.05
Height (in.)1.46
WarningProposition 65 Warning for California Residents