Batteries included

摘要

Most of my listening to music relies on various well-established types of source, played via a power amplifier and a pair of loudspeakers. In recent years I've also begun using a mobile device and a pair of headphones. This has proved an excellent way to enjoy music when undertaking a tedious task that prevents me sitting down in a comfy chair at the 'sweet spot' of a stereo set-up. However it's pretty clear that for many, perhaps most people, music is now usually heard via headphones or 'earbuds' driven by a 'device' - often a mobile phone or 'tablet'. And it recently occurred to me that the differences between these two approaches actually have some aspects I'd not previously appreciated.