Buyers who set up a JBL or UE speaker at a backyard party and decided it wasn't loud enough are the Soundboks Go's market. RTINGS, TechHive and GearJunkie all confirm it is overpowering for indoor use and right for genuine outdoor entertaining: backyard concerts, tailgates, lakeside parties. Its 20 lb weight and $699 price put it in a different category from the rest of this list, but on pure loudness no other speaker here competes.
- — 121 dB maximum SPL — the loudest portable Bluetooth speaker in this list by a wide margin
- — 144W class-D amplification with a 10-inch woofer for genuine bass impact at distance
- — Replaceable, swappable batteries — 40 hours at mid-volume, 10 hours at maximum SPL
- — 20 lb (9 kg) and roughly the size of a small kick-drum — needs a shoulder strap to carry
- — IP65 rating only — not safe for submersion or sustained rain
- — $699 MSRP is more than 2x the Xtreme 4 or Hyperboom