THX Onyx: A do-it-all DAC for the travelling audiophile

Hi-res, MQA, DSD, supports Apple Music's highest quality - but is it worth the hassle? Review Apple introduced hi-res lossless audio to its music service last month, but third-party hardware is required to enjoy it - if indeed the difference is audible. We took a look at the THX Onyx, a portable DAC and headphone amplifier that claims to be just the thing....