Pro-ject Head Box S2 Digital
Pro-ject Head Box S2 Digital
Pro-ject Head Box S2 Digital

Pro-ject Head Box S2 Digital: Headphone amplifier with high-resolution sound

The Pro-ject Head Box S2 Digital offers a premium headphone amplification experience at an appealing price point, specifically designed for those who prefer digital audio sources. It negates the need for costly analogue components, instead investing in top-notch digital conversion quality. Powered by an ESS Saber 9038 circuit, it delivers high-resolution, audiophile-grade sound.

Dynamic Digital Integration

Featuring three distinct digital inputs, the Head Box S2 Digital caters to all standard requirements. Its standout feature is the choice among five digital filters, allowing users to customize their listening experience according to preference or mood.

Available in sleek black or silver aluminum, the Head Box S2 Digital is a stylish addition to any setup.

Designed for Digital Aficionados

Pro-Ject offers solutions for both analogue and digital audio enthusiasts. For the latter, the Head Box S2 Digital shines with its focus on high-resolution digital formats, supporting PCM playback up to 32bit/768kHz and DSD up to DSD256. Despite its emphasis on digital, it also features a quintet of analog filters for sound customization, easily selectable for personalized audio tuning.

Its comprehensive digital input options include optical Toslink for easy TV connection, coaxial for CD players, and USB B for PC connectivity, serving as an external sound card. The USB input is especially robust, supporting HD audio up to 32-bit/768kHz for PCM and DSD256, and includes double filtering to minimize PC noise interference. The durable metal chassis with an aluminum front not only signals quality and elegance but also serves as an electromagnetic shield, protecting the audio signal from external noise.

The user-friendly design is highlighted by a prominent volume control and a 6.3 mm headphone jack on the front panel, ensuring ease of use for daily listening activities.


  • Ultra high resolution: 32-bit / 768 kHz
  • ESS Sabre 9038 DAC
  • Supports up to DSD256
  • 5 optional filter characteristics
  • Custom-made digital transient filter
  • Very low jitter: 1×10ˆ-13 s
  • Synchronization of all internal clocks
  • Organic plastic capacitors
  • miniMELF thin film resistors
  • Elegant and robust aluminum finish


  • No analog inputs
  • No support for balanced headphones
  • Only one of each type of digital input
  • No tone controls
  • Connection for “only” one pair of headphones

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