Head Box S2 Digital
Headphone amplifier and DAC with 32bit and DSD256 support
High performance DAC and headphone amplifier
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. 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 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! 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
|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 bis 24 b / 192 kHz|
|Optical||PCM bis 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 Veff|
|Hochpegelausgan||1 Paar RCA/Cinch-Buchsen (Variable)|
|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|
The device is fully compatible with Windows 10. It may be necessary to reinstall latest drivers after updating from Windows 7/8/8.1 to Windows 10.
You do not need a driver. The driver is already integrated in the operating system.
Turn off your Computer and press at start alt+cmd+p+r until another starting sound appears. With this command the USB bus will be reset and the USB Box will be recognized new.
There are many forum reports about that issue. It is a widely spread error affecting a wide array of USB DACs, unfortunately there is no current fix for this problem, since it lies in the Core Audio of Apple's OSX. We advice not to use our USB DACs with OSX El Capitan.
When cycling through the inputs it can occur that the sound gets distorted using Optimum Transient. After about three minutes the filter "locks" in properly and the sound should be normal again. Unfortunately that's a bug in the ESS silicone chip and we can't do anything about it.