Acoustic Research M2

Fantastic sound quality ; Good storage ; Seriously loud

Slightly weak battery life ; Awkward OS restrictions ; Chunky and weighty

It terms of sound quality the M2 is a superb device, able to deliver a wide range of file formats in exquisite detail. There are a few issues, but these are more to do with general usage, so if you prioritise sound above all else you may be able to...

Excellent sound quality ; Superb weight and punch to sound ; Plenty of detail ; Substantial and stylish build quality ; Extensive file compatibility ; Easy to use ; That volume dial

Some ergonomic/design issues ; Limited Android experience ; Battery life could be longer ; That volume dial

Looks smart, feels hefty, sounds fantastic – a few small issues aside, this is the best high-res player we’ve heard so far