I swapped my Bose and JBL speakers for this floating Turtlebox - and it's seriously tough

**Executive summary:** This is a hands-on review of the Turtlebox Cub portable Bluetooth speaker that highlights its very loud output (up to 118 dB), strong bass and clear highs, durable marine-grade construction with IP67 rating and saltwater resistance, 14-hour battery life, reverse USB-C charging, and Party Mode grouping; drawbacks include a $330 price, no companion app for EQ/settings, and midrange distortion at high volumes, making it best suited for rugged outdoor use rather than critical indoor listening.