•Philips's Fidelio range is home to more than a dozen models, but the DS7700 is perhaps the most feature-packed of them all. It functions perfectly well as a standard "at-home" dock but also offers Bluetooth wireless audio streaming and a built-in battery that'll provide up to 10 hours of playback away from the power plug. •Conscious that a coated metal speaker grille won't fare too well with too many knocks and scrapes, the DS770 has a metal-covered plastic plate that fits over its front when the unit's not in use. This is held in place with magnets, leaving no clips or clasps to break off.