The portable speaker that earned 300,000+ reviews.
The lineup.
From the pocket-sized Solo to the room-shaking 3XL. Pick the size that fits your life — every model waterproof and built to last.
From the lab of Henry Kloss to your backpack.
In 1988, audio engineer Henry Kloss founded Cambridge SoundWorks in Cambridge, Massachusetts. Before that, he co-founded Acoustic Research, KLH, and Advent — and invented the acoustic suspension loudspeaker that changed home audio forever.
In 2000, he was inducted into the Consumer Electronics Hall of Fame in the inaugural class — alongside Nikola Tesla, Alexander Graham Bell, and Ray Dolby.
OontZ is the portable evolution of that legacy. Same engineering DNA. Same obsession with sound. Small enough to throw in a tote.
Read the full story →What you get only here.
The same speaker is on a dozen marketplaces. The experience around it isn't.
Real engineer support.
Email or call the Cambridge SoundWorks team — real people who know the product inside out, not an outsourced chatbot.
Every part. Every model.
Cables, batteries, brackets, and cases for the speakers we make — kept available here, long after launch day.
Made for you.
Corporate gifting, event branding, special editions, bulk orders. From 10 units to 10,000 — only available direct.
Guaranteed authentic.
Every order ships straight from Cambridge SoundWorks — never a third-party reseller. No counterfeits, no gray-market units.
Five-star ratings across our Amazon listings — more than most premium audio brands.
Real people, real pool days, real road trips. The rating is earned across hundreds of thousands of Amazon reviewers — and it's why the OontZ lineup keeps topping the best-seller charts.
Shop the lineup →Try OontZ for 30 days.
Backed by Cambridge SoundWorks since 1988. If something's off, we make it right.
Buy with confidence.
Free shipping in the contiguous US. Your speaker arrives in 3–10 business days. Track every step.
Try it for 30 days.
Not happy? Reach out within 30 days at oontz@cambridgesoundworks.com. Returns must be in original condition — full details in our refund policy.
1-year warranty included.
Manufacturing defects covered for a full year. Direct from the Cambridge SoundWorks engineering team — not a third-party returns desk.
Common questions, real answers.
If your question isn't here, email oontz@cambridgesoundworks.com — we usually reply within 1–2 business days.