Px7=S2 – That's the heady math B&W throw behind their "best wireless active noise-cancelling headphone yet". The Px7 S2 [$549] bows a new 40mm driver angled within the earcup; a new noise cancelling system; six upgraded microphones; Qualcomm aptX; a slimmer profile; improved fit; memory foam; USB C and 3.5mm connections; 24-bit resolution; and the company's Music App including adjustable EQ and voice assistance. 30 hours of battery life claim to refresh to 7 hours with a just 15-min. quick charge. Finish options are grey, blue and black with complementary detailing and a number of physical controls on the earcup rim mean that app control isn't a requirement.
