Head Box DS is a high-end headphone amplifier with a USB input and built-in D/A converter. Having this feature set provides the ability for direct connection of digital sources to the Head Box DS for headphone listening. Additionally, an analog output allows the unit to function as a D/A converter for the same input sources when connected directly to a preamplifier. The USB input is a 24-bit/96kHz asynchronous design delivering superb sound quality from a computer audio source. Additional digital inputs include a coaxial RCA and Toslink optical that can be used to connect to, for example, a digital output of a CD Player. The dual mono amplifier topology employed uses very high quality component parts including ultra low-noise ICs and high-reliable relay switches. All controls are located on the front panel for ease of use and the Head Box DS features a large and legible LCD readout. An outboard power supply is included and in 2013 an optional rechargeable DC supply will be made available.
TECHNICAL SPECIFICATIONS Power Output 350mW/30ohms, 60mW/300ohms
Headphone Connection > 30 ohms
Signal to Noise 112dB (A weighted) at full output
Frequency Response 20Hz - 20kHz/-0.5dB THD 0.0014%
Headphone Jack 3-pole 1-4" (6,3mm Ã†) Co-axial JackLine-Level Input1 pair RCA Jacks
Line-Level Output 1 pair RCA Jacks
A/D Converter Cirrus Logic CS4344. 24Bit/192kHz. Delta Sigma D/A
Supported Audio Format PCM (LPCM). No support for multi channel formats like Dolby® AC-3 or DTS™
Sampling Rates USB Input 44.1kHz and 48kHz
Optical Input 44.1kHz, 48kHz, 88.2kHz and 96kHz
Coaxial Input 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz and 192kHz
USB Input 5 Pin Mini B Connector, USB cable supplied
USB Signal Digital Serial Data Protocol USB 2.0
Operating Systems Windows XP®, Windows VISTA®, Windows 7® and Mac OS®Power Supply18V/1,000mA DC
Power Consumption 500mA DC, <1W in standby
Dimensions (WHD) 4.1 x 2.9 x 5.7 in.,103 x 72 x 144 mm
Weight 2lbs., 990g without power supply
Finish Black or Silver
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Item can be returned within 7 days of receipt.
Items must be returned in their original condition, with all included packing materials and no signs of use. Buyer assumes responsibility for all shipping return costs unless the item was not received as described.
Buyer will receive a full refund in the original payment method less any shipping charges.