Pro-Ject Head Box S USB

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Class-leading sound quality and practical configuration in one box. Head Box S USB satisfies with rich colorful presentation, very close to reality.  This perfect solution acts as digital input extension and sound upgrade, compared to all headphone outputs, that are integrated in conventional amplifiers. Analog source connection for Head Box S USB can be done from record-output of your amplifier and digital source via USB 1.1. Because of an integrated loop-out for the analogue input you do not loose connectivity to your recording device.  

High quality amplifier modules are used to guarantee best possible headphone amplification and makes hearing your favorite digital or analogue music a real delight! Head Box S USB delivers natural dynamics, transparency and pure audiophile enjoyment!  


  • RCA stereo input  
  • Digital USB 1.1 input (no extra driver needed)  
  • RCA stereo loop-out for analogue input  
  • 6.3 mm jack input on front  
  • Suitable for headphones with low or high impedance  
  • Extremely low noise and distortion  
  • Full metal housing protects against interference  
  • Significantly better sound than standard headphone outputs from integrated amplifiers  
  • DC power supply (< 1 watt standby power)  
  • On/Off switch on front  
  • Faceplates in silver or black  


  • A/D-converter: Burr Brown PCM 2702E16-Bit Delta Sigma, 8-fach Oversampling
  • Sampling rates: 44.1kHz and 48kHz
  • USB: 1.1 input 5 pin mini b connector (USB cable supplied)
  • Operating systems: from Windows XP® up, Mac OS® & Linux
  • Power output: 350mW/30 ohms, 60mW/300 ohms
  • Output impedance: > 30 ohms
  • Signal-to-noise ratio: 112dB - IEC -A at full output
  • THD: < 0,002%Gain 9dB
  • Headphone socket:  3-pol 1/4“ Ø (6,3mm)
  • Power supply: 18V/500mA dcC; 220 - 240V, 50Hz
  • Power consumption: 18V/250mA DC / <1 watt standby
  • Dimensions (W x H x D): 4.1  x 1.42 x 4.1 in (4.3 in incl. sockets)
  • Weight: 1.33 lb without power supply

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