Pro-Ject Head Box S2 Headphone Amplifier

Class-Leading Sound Quality and Compact Size

When it comes to delivering high class sound through the output of modern devices such as laptops or smartphones, they all fail on their own. They don’t have enough power to reveal the true potential of today’s headphones. Pro-Ject's Head Box S2 has enough power to unleash the highest sound quality from any headphone.

It also provides a significant upgrade from the anemic headphone section built into many conventional amplifiers and lets you add headphone capability to amps and other gear that lack a headphone jack.

Two Front-Panel Headphone Jacks

The Head Box S2 features one RCA input for connecting the source of your choice. On the front panel are two headphone jacks, one 1/4" for hi-fi headphones and one 1/8" for modern 'phones. For shared listening experiences, both outputs can be used simultaneously. The 725mW output power will deliver top quality sound and enough volume, even for those who wish to listen at loud volumes! Head Box S2 features a rich and full sound with plenty of dynamics and transparency.

Highest Quality Parts and Construction

Only the best possible components were used to create this one-of-a-kind headphone amplifier. The enclosure is fully made of aluminum for highest aesthetics and to protect it effectively against electromagnetic interference and vibrations, which can cause unpleasant listening experiences.

Due to its low price combined with versatility, power and high quality sonics, the Head Box S2 is an absolute audiophile bargain!

Product made in Czech Republic.

• Audiophile headphone amplifier
• Suitable for demanding headphones
• 1/4" and 1/8" headphone jacks
• Both outputs usable simultaneously
• Bypass RCA loop output for additional amplifier
• Superior low distortion
• Low noise components for ultimate sound performance
• Small footprint
• Aluminum/metal sandwich casing protects against vibrations and electromagnetic interference
• Available in silver or black

• Power output: 725 mW (into 32 ohms)
• Signal-to-noise ratio: -110dBV
• THD +N: < 0.002%
• Gain: 11dB
• Crosstalk: 68dB
• Frequency response: 20Hz - 80kHz (+-0,2dB)
• Power supply: 5V/0.5A DC
• Standby Power consumption: < 0.5W
• Dimensions: 4" wide, 1.4" high, 4.1" deep (with connections)
• Weight: 21 oz. without power supply

"Overall, the Head Box S2 impresses for its size and price, making a great starting point for anyone looking for a first dedicated headphone amplifier."

- John Grandberg, Darko.Audio