Most portable Bluetooth speakers are built for small gatherings, at most delivering room-filling sound. For larger groups — think block party, not backyard BBQ — the Soundboks 4 fills in nicely. It's powered by three 72W Infineon Class-D amps, driving a pair of 10" woofers and a 1" compression driver tweeter and letting it deliver distortion-free audio all the way up to a concert-level 126 dB max volume. Capable of wirelessly connecting to four other units, it's also IP65 rated for protection against the elements, has a swappable battery that lasts for up to 40 hours at mid-volume, and offers microphone and instrument inputs for use as a true PA. Hosting an outdoor watch party or movie night? It also works well as a wildly overpowered outdoor soundbar.