The headphone landscape has, over the last decade or so, been reinvigorated by the iPod and the smartphone sector. I, for one, probably listen to more music on a daily basis on my smartphone than I did, in general. At least since my Walkman and Discman became obsolete. Walk through the streets of many a city and town and you will see many a person with headphones on – whether in- or over-ear. Plus, Beats By Dre, in a way, made headphones a lifestyle item by aligning themselves with musicians, sports people and other public personalities. Choosing a pair of headphones has become as...