Welcome to the March 2015 issue of Hi-Fi Choice – the essential guide to getting the best possible sound from your hi-fi, whether you're buying, tuning or tweaking...

This month's group test looks at six Bluetooth headphones models to see how they live up to the wireless hype. Most of us already have access to an almost universal wireless audio option incorporated into practically every smart device that's used to access cloud-based and wi-fi-networked music – we talk, of course, of the ubiquitous short-range cable-free connection called Bluetooth. Alongside the aptX codec this wireless tech is also appearing on home hi-fi and can deliver near-CD quality levels. But it really comes into its own on the move, and we can't think of a greater desire to be wire free than when wearing a pair of headphones. With this in mind we have picked six Bluetooth models to find the best for wireless listening.

Also in this issue we go In-depth with NAD's superb C 510 Direct Digital DAC/preamp. Plus, we listen to Wharfedale's luxury sounding but affordable Diamond 230 floorstanders, exaSound's e22 DAC/headphone amp and we visit Las Vegas in our CES Show Report.

What's more, our Insider feature gets you inside the hi-fi industry scene while our expanded music section covers all the latest releases to show off your system as well as the record labels behind the music. Plus our five-page Letters section answers your cries for hi-fi help. To get involved write to us at letters@hifichoice.co.uk

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