Until recently, wireless audio technology was unable to deliver sound quality approaching that of a traditional wired system. However, thanks to the introduction of a new wireless standard developed by the Wireless Speaker and Audio Association (WiSA), audiophiles who want to avoid unsightly cables cluttering their living rooms now have options—and rather stylish ones, at that. The new Bang & Olufsen BeoLab 17, 18, and 19 speakers incorporate technology that the Danish company calls Immaculate Wireless Sou…