Apple Stores have begun a significant sale on audio accessories during August, with two offers already underway and a third one coming later. Currently, the stores are offering 10 percent off on select Beats by Dre headphones and speakers, along with a $50 discount on the price of the Jawbone Big Jambox Bluetooth speaker, the latter offering being matched by Jawbone through its own site and resellers. A reader has alerted Electronista that the stores will also be offering two Bose QuietComfort headphones for 10 percent off beginning on Sunday.