The portable speaker that earned 300,000+ Amazon ratings.
The lineup.
From the pocket-sized Solo to the room-shaking 3XL. Pick the size that fits your life — from splash-ready everyday speakers to fully waterproof models.
Made for real life
Pool days, road trips, dorm rooms, backyards, beaches — there's an OontZ for the way you actually listen.
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.
OontZ is sold across marketplaces — but the best OontZ experience is right here.
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.
Ratings across our Amazon listings, with a 4.6-star average.
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 →Common questions, real answers.
If your question isn't here, email oontz@cambridgesoundworks.com — we usually reply within 1–2 business days.
Will it work with my iPhone, Android, or laptop?
Can I pair two OontZ speakers for stereo?
How waterproof is it really?
How long does shipping take?
What's your return policy?
How does the 1-year warranty work?
Can I buy bulk for corporate gifts or events?
Why buy here instead of Amazon?
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