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Pro-Ject - Head Box RS Headphone Amp

Pro Ject

  • $ 1,09900

Pro-Ject Head Box RS Headphone Amp

The Best of Both Worlds: Pro-Ject Head Box RS Headphone Amplifier Features Fully Balanced Tube Input Stage and Single-Ended Class-A FET Output Stage

Pro-Ject Head Box RS Headphone Amplifier Sounds Full, Lively, and Detailed and Also Has a Precision Volume Control and Custom Impedance Matching

Pro-Ject Head Box RS headphone amplifier uses tube technology and a Class-A output stage to take headphone listening to deliriously good levels of enjoyment. With Head Box RS, ear-dazzling dynamics, detail, and soundstaging are an arm's reach away. You'll hear music come to life with pinpoint detail and spot-on imaging all the while experiencing terrific clarity courtesy of Head Box RS' internal components and audiophile design.

Clever inventions can bring you close to the actual experience of tubes, but there's no substitute for the real thing. Pro-Ject Head Box RS knows this well. Equipped with a fully balanced tube input stage and single-ended Class-A FET output stage, this heady instrument makes your 'phones and music sing via its switchable output impedance, insanely low distortion, and a precision volume control.

Balanced and Unbalanced Inputs, Plus Pass-Through Options

The Pro-Ject Head Box RS headphone amplifier combines a 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. Its volume control consists of a precise volume regulator with matched resistance between the left and right channels.

Impedance Adjustments Allow Custom Matching to Any Headphone

A special output impedance selector allows to adjust output impedance in three steps 5, 20, and 50 ohms to achieve better impedance matching between amplifier and headphones. 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 out-standing reproduction of detail, dynamics and imaging with any dynamic headphone.


Line-level input/output: 1 pair RCA/phono & 1 pair XLR each
Headphone jack: 3-pole 1/4" (6.3mm Ø)
Power output: 350mW/32 ohms, 60 mW/300 ohms
Crosstalk: -58dB
Signal-to-noise: -99dB
Frequency response: 30Hz – 20kHz/(+0,2dB; -0,05dB)
THD (IMD): 0.17% (XLR in, output impedance setting 5 ohms, load 32 ohms)
Gain: 9dB
Outboard power supply: 20V/3A DC
Power consumption: 1,3A DC
Dimensions (WHD): 8.1" x 2.8" x 7.9" (209) mm (D with sockets)
Weight: 4.7 lbs. (without power supply)

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