B&W to introduce new P7 Wireless headphones in September

British loudspeaker company Bowers & Wilkins has announced the P7 Wireless headphones. Available from this September for £319.99, the P7 Wireless builds on the dual success of the original P7 and the award-winning P5 Wireless.  Thanks to the acoustic advances made with the original P7 drive units, sound performance is, claims the manufacturer, even better than…