Linus and Renzo plunge headfirst into underwater audio, comparing Renzo’s custom Synchrosound speakers, Shokz OpenSwim Pro bone-conduction headphones, and Amazon’s budget Monster S620 Bluetooth speaker. They run real-world pool tests to see which gadgets actually pump tunes during laps and workouts.
Along the way they geek out on underwater acoustics—why highs get swallowed by water and how bone conduction bypasses that—and crown their top pick for anyone craving beats beneath the waves. Hint: it’s not always the cheapest option.
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