Hi-Fi, Impressive Audio Clarity and Power, Ultra Low Noise and Distortion, Very Small package, Hi Power, Hi Tech Laboratory product, 2600mAH Ni-MH Rechargeable Batteries. The uAMP107B is a high-power audiophile-grade stereo headphone amplifier. It is designed to power all headphones that have a load impedance of 8 ohm to 600 ohm. It is not only to power headphones but also can drive 8 ohm speakers or share a single audio source with up to 4 headphones (32 ohm or more, same impedance). It’s guaranteed to drive your headphones better than the vast majority of headphone jacks available on portable equipment. You will hear an improvement in a high-quality headphone’s ability to resolve musical detail, express deep, tight bass and present a more natural stereo image. MADE IN USA.

		Veiw uAMP107 Website