When it comes to delivering high-class sound through the output of modern devices such as laptops or smartphones, they simply don’t have enough power to reveal the true potential of today’s headphones. Head Box E, stepping in between the source and your headphones, has enough power to unleash the highest quality sound from almost any pair of headphones. Featuring one RCA input for a source of your choice and another RCA output for signal passthrough, the micro-powerhouse keeps things simple. The front panel plays host to two headphone jacks, one 1/4 inch for hifi headphones and one 1/8 inch for modern personal listening products. Both of these outputs can be used simultaneously for shared listening experiences, if desired.

With a powerful discrete headphone amp design, the Head Box E’s unusually high output power will deliver top-quality sound and plenty of volume, even for those who wish to listen at loud volumes and use difficult-to-drive headphones. Featuring a rich and full sound with plenty of dynamics and transparency, the fully discrete headphone amplifier does not use cheaper integrated chip designs, instead opting for fully discrete electronics in an expertly laid out circuit board design. The result, not only fantastic power metrics with clean measurements, but also a long product life-cycle, as maintenance, service and repair can be ensured for years and years to come.

Only the best possible components were used to create this one-of-a-kind headphone amplifier. With a fully metal casework to effectively protect it against electromagnetic interference and vibrations (which can cause unpleasant listening experiences), and simple yet sturdy machined aluminium controls offering a reassuring and easy user experience, the Head Box E is true Pro-Ject quality squeezed into an effortlessly integrable chassis size.

Technical Specifications

Output power 665 mW (into 32 ohms)

Signal to noise ratio -105 dBV

THD +N < 0,005%

Gain 11 dB

Crosstalk 65 dB

Frequency response 20 Hz - 80 kHz (+-0,02 dB)

Analogue inputs 1 pair RCA/Cinch

Headphone output 1 x 6.3 mm jack, 1 x 3.5 mm jack

Output impedance (Headphone amp) <1 Ohm

Analgoue loop out 1 pair RCA/Cinch

Power supply 5V/0.5A DC

Standby Power Consumtion < 0,5 W

Dimensions W x H x D 103 x 37 x 120 mm

Weight 390g without power supply