Harman Kardon has taken an old favorite and has given it a total makeover with the new and improved GO+PLAY wireless speaker for 2016. Designed to provide a rich and room-filling audio experience with its set of six high-performance drivers, the new GO+PLAY is a weighty Bluetooth 4.1 wireless speaker you can still pick up and carry with you to your next destination thanks to its large internal battery capacity, which Harman Kardon says will last up to 8 hours. While it isn't its most expensive speaker on offer, the GO+PLAY is Harman Kardon's most powerful and perhaps even the best sounding portable speaker yet. So how does it stack up against speakers like the JBL Xtreme, Vifa Oslo, B&O Beoplay A2, and the Marshall Kilburn? You're about to find out!