Mini HiFi headphone amplifier, It is delicate, compact, lightweight, and portable that it can be carry conveniently. 1 x Headphone Amplifier. Adapted Headphone Impedance: 16-300Ω. 3.5mm AUX input and output, SNR>100Db and THD+N 0.0003%, make it possibility to output not just louder sound, but a sharper and more real stereo sound without distortion.
eBay