Long battery life.
Great to have both portable and stationary players DAC at the computer.
Tested with the Sennheiser HD 550 headphone XTZ Divine, Beyerdynamic Custom One Pro, Siberia headset 2. Driver everything with panache.
The greatest difference was noticeable in direct comparison with the built-in sound card in my computer and switch to USB DAC on fiion.
Happy with sound enhancements, and my interest in fidelity blossomed again.