Head Box S2 Digital comes fully equipped to meet the demands of the modern audiophile. It supports playback for PCM files up to 32bit/768kHz and DSD decoding up to quad DSD (DSD256). It also includes five digital filers to adjust the sound based on your preferences. Three digital inputs (USB, coax & optical) ensure compatibility with a variety of digital sources. The coaxial S/PDIF input is optimal for use with 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 high-resolution support for files up to PCM 32bit/768kHz and DSD256. Any unwanted noise from the USB path is double-filtered and thus inaudible. The front-seated 1/4″ headphone output delivers clean, precise & musical sonics and the aluminum/steel enclosure effectively isolates the circuitry from interference that could otherwise bleed into playback.

Additional information
Weight 0.36 kg
Dimensions 12.2 × 10.3 × 3.7 cm



  • 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
  • Handmade in Europe


  • Digital inputs 1x USB (B)
  • 1x Co-axial (RCA)
  • 1x Optical (TOSLink)
  • D/A-converter: 1x ESS9038K2M 32-bit
  • Playback formats USB: up to DSD256, PCM up to 32b/768kHz
  • Optical: PCM up to 24b/96kHz
  • Coaxial: PCM up to 24b/192kHz
  • Filters: 5 filters selectable on front
  • Frequency response 20Hz – 20kHz
  • Analogue outputs: 6.3mm Headphone (front), 1x Variable Out (RCA)
  • Output voltage: 2,05 Veff
  • Minimal recommended headphone impedance: 8ohms
  • Headphone output power: 6,6mW/600ohms, 68mW/32ohms
  • THD: 0,0007% at 0dB, 2V RMS, 1kHz
  • Dynamic range: 120dBA
  • Outboard power supply: 5V/1A DC (included)


“A gatekeeper into the realm of high-performance headphone amplification” – John Darko, Darko Audio