Highend headphone amplifier

Ultimate highend headphone sound!

Pro-Ject Head Box RS Black is a reference quality headphone amplifier with fully balanced tube input stage (double triode tube 6922) and single ended, class A „FET (Field Effect Transistor)“ output stage. It offers balanced and unbalanced input as well as balanced and unbalanced bypass connectors for using the pass-through input signal with other components.

Volume control consists of a precise volume regulator with matched resistance between left and right channel.

A special output impedance selector allows to adjust output impedance in three steps 5, 20 and 50 ohm to achieve better impedance matching between amplifier and headphones. Some experiments with different positions of output impedance selector are highly recommended to get the ultimate sound experience for your headphone.

An advanced multi-stage power supply with four different output voltages is used to achieve the best possible S/N ratio for outstanding reproduction of detail, dynamics and imaging with any dynamic headphone!

The HausΜusik company was founded in 2010. It has its headquarters in Marousi, Attica, at 40 Agiou Konstantinou str., in the historic Atrium shopping center. Our personal experience guarantees the ideal solution to the needs of customers in every case. In our 5 years of presence in the market, we have managed to build confidence and trust between our customers, which has been the catalyst for our growth. Our main goal remains to continue improve our services for our customers, to find the most ideal proposals and solutions in combination with your financial data and to maintain the friendly and warm environment that embraces you from the very first moment.


  • Power output 350 mW at 32 ohms / 60 mW at 300 ohms
  • Crosstalk – 58 dB
  • Frequency response 30 Hz – 20 kHz /(+0,2 dB; -0,05 dB)
  • THD+N 0.17% (XLR in, output impedance setting 5 ohm, load 32 ohm
  • Gain 9 dB
  • S/N ratio 99 dBA
  • Headphone jack 3-pole ¼“ (6.3 mm ) co-axial jack
  • Line-level input 1 pair RCA + 1 pair XLR
  • Line-level output 1 pair RCA + 1 pair XLR
  • Outboard power supply 20 V/3 A DC, suitable for your country’s mains supply
  • Power consumption 1,3 A DC
  • Dimensions W x H x D 206 x 72 x 200 (209) mm
  • Weight 2150 g without power supply

Customer Support

Call us: +30 210-2848893

Additional Information

Weight 2,150 κιλά
Dimensions 20,6 × 20 × 7,2 cm


για αγορές άνω των 100€ εντός Αττικής


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