JBL Boombox 3 vs JBL Boombox 4

The JBL Boombox 4 offers mostly connectivity upgrades to the JBL Boombox 3, as well as a slightly louder top volume and a lighter design. Bluetooth LE support and Auracast compatibility are forward-thinking additions that aren't universally supported: there's no LC3 support for iOS devices, for example, and older JBL speakers can't connect via Auracast. The longer battery, with a swappable battery pack, is a definite bonus for outdoor use, though, as is the decreased weight. Still, when it comes to audio performance, the older generation has a more even default sound profile and less compression at max volume. It also yields lower latency via the standard SBC codec, too. While the fourth iteration has a more complete feature set, you might find better value with the third generation, given it'll likely be available on sale.