Compact headphone amplifier that is easy to carry around while travelling or doing various sports and features a 4dB Bass Boost function for intense audio experience. It provides a headphone impedance of 16-300 Ohm, total output power of 120 mW x 2 (16Ohm load) or 13 mW x 2 (300Ohm load), and frequency response of 10 Hz-100 kHz. The body of the amplifier is made of sturdy alloy and features USB and micro USB connectors that provide powering for the built-in 60mAh lithium-ion polymer battery. A USB cable (for battery charge only), audio cable and clip cover are all included. Total harmonic: <0.15%. Signal-to-noise ratio: ≥97 dB. Dimensions: 57 x 27.6 x 9.1 mm. Weight: 18 g. Silver colour.