Small enough to fit in the palm of your hand, the iFi Uno has a curved case is made from tough, mineral-filled polymer and contains DAC and headphone amp circuitry to upgrade the basic audio tech in all sorts of digital devices.

Its USB-C input connects to Windows PCs, Apple Macs, and all manner of smartphones and tablets. It doesn’t require its own power source, receiving both power and audio data from the device to which it’s connected. It delivers a processed, optimally amplified analogue audio signal to headphones, powered speakers, or an amp and separate speakers.
The Uno, by iFi, is a first-rung audio upgrade, a DAC/headphone amp designed for people who may not know what a DAC is.