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Pro-Ject Head Box S2 Digital - Headphone Amp / DAC


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Colour: Black

  • Black
  • Silver
Back In Stock on - [19041994]
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The Pro-Ject 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). The Head Box S2 Digital also comes with five digital filters for soundshaping to the listeners preferences. 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 coaxial S/PDIF input takes all data from a digital transport such as the Pro-Ject 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. Unwanted 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. The 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 inputs: 1x USB (B), 1x Co-axial (RCA), 1x Optical (TOSLink)
  • D/A-converter: 1x ESS9038K2M 32 bit
  • USB: up to DSD256, PCM up to 32b/768kHz
  • Coaxial: PCM bit 24 b / 192 kHz
  • Optical: PCM bit 24 b / 192 kHz
  • Filter settings: 5 different selectable on front
  • Frequency response: 20 Hz - 20 kHz
  • Analogue outputs: 6.3mm Headphone (front), 1x Variable Out (RCA)
  • Output voltage: 2.05 V
  • High Level Output: 1 Pair RCA/RCA-Jacks
  • Headphone output power: 68 mW /3 0 Ohm, 6.6 mW / 600 Ohm
  • Minimal recommended headphone impedance: 8ohms
  • THD: 0.0007% at 0 dB, 2 V RMS, 1 kHz
  • Dynamic range: 120 dBA
  • Outboard Power supply: 5 V /1 A DC (included)
  • Dimensions W x H x D: 103 x 37 x 122 (including knob and connectors)
  • Weight: 360 g without power supply

Further Information

Pro-Ject Head Box S2 Digital - Headphone Amp / DAC - User Manual

Pro-Ject Head Box S2 Digital - Headphone Amp / DAC - Product Information

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