The music you listen to wasn’t designed for small earphones and headsets which is why you need the Portable Headphone Amplifier and DAC by Oppo. This compact and travel-friendly device is compatible with virtually any set of headphones and delivers audio to your ears as it was intended to be heard. Working with Apple, Android, and Windows systems, the Portable Headphone Amplifier produces high-resolution audio every time thanks to the ESS Sabre32 Reference ES9028-Q2M DAC chip. Complete with a genuine leather casing, contrast stitching, and bevelled aluminum edges, the Portable Headphone Amplifier is beautifully elegant and sophisticated. Also functioning as a portable battery, the device itself recharges in just 30 minutes. Smaller than most smartphones, the Portable Headphone Amplifier is easy to stash in your pocket and take on the go.