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Pro-Ject S2 Line Silver Micro High End Headphone Amplifier

Model #: Head Box S2-SV
At a Glance
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. Head Box S2 has enough power to unleash highest sound quality from any headphone.
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$99,999.00Save $NaN

Get to know this product.

It features one RCA input for a source of your choice. Front-sided are two headphone jacks, one 1/4 inch for hifi headphones and one 1/8 inch for modern head- and earphones. For shared listening experiences both outputs can be used simultaneously. Its 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 plen-ty of dynamics and transparency.

Only the best possible components were used to create this one-of-a-kind headphone amplifier. The enclosure is fully made of aluminium 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 Head Box S2 is an absolute audiophile bargain!


  • Suitable for demanding headphones
  • 6.35mm and 3.5mm headphone output
  • Bypass RCA loop output for additional amplifier
  • Superior low distortion
  • Low noise components for ultimate sound performance
  • Small footprint
  • Both outputs usable simultaneously
  • Aluminium/metal sandwich casing protects against vibrations and electromagnetic interference
  • Available in silver or black

Technical Specifications

Output Power725mW (into 32ohms)
Signal To Noise Ratio-110 dBV
THD+ N0.002%
Gain11 dB
Crosstalk68 dB
Frequency Response20 Hz - 80 kHz (+-0.02 dB)
Analog Inputs1 pair RCA/Cinch
Headphone Output1 x 6.3 mm jack, 1 x 3.5 mm jack
Output Impedance (Headphone Amp)<1Ohm
Analog Loop Out1 pair RCA/Cinch
Power Supply5V/0.5A DC
Standby Power Consumption< 0.1 W
Dimensions W x H x D103 x 37 x 120 mm
Weight365g without power supply

Misc. Specs

Product Weight (lbs.)0.8000
Depth (in.)4.72
Width (in.)4.05
Height (in.)1.46
WarningProposition 65 Warning for California Residents