Short answer: the JBL Xtreme 3. It ranks #18 of 126 large speakers by sound quality, rated 4.3/5, at $269.95; the Turtlebox Cub ranks #90, rated 3.0/5, and costs $330, so there is not much of a tradeoff to weigh.
The JBL Xtreme 3 is the better-sounding, lighter choice. A loud, waterproof stereo speaker with deep bass, balanced sound and a power bank for charging devices. At 4 lbs (1.83 kg) it weighs noticeably less than the Turtlebox Cub at 5.3 lbs (2.4 kg). It plays in stereo from a single unit, unlike the Turtlebox Cub. The tradeoff: Boosted bass.
The case for the Turtlebox Cub: A tough, very loud compact speaker that is fully waterproof, crushproof, and built for camping, boating and tailgates. Watch for: The evidence so far is listening impressions from two reviews, with no side by side tests against other brands.
Buy the JBL Xtreme 3. It is rated higher for sound quality than the Turtlebox Cub and costs less, so only choose the other one for a particular feature it does better.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Prices on this page were last checked November 14, 2026 at 6:17 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Specifications Side By Side
| JBL Xtreme 3 | Turtlebox Cub | |
|---|---|---|
| Price | $269.95 | $330.00 |
| Ranked | #18 of 126 in Large Size Portable Bluetooth Speakers | #90 of 126 in Large Size Portable Bluetooth Speakers |
| Aux Input | Yes | - |
| Bass Extension (-10dB) | 53Hz | - |
| Battery Life | 15 hours (Manufacturer specified) | 14+ hours (Manufacturer specified) |
| Bluetooth Latency | 133ms | - |
| Maximum SPL | 105dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (PartyBoost up to 100 speakers) | Yes (Party Mode) |
| Power Bank | Yes (USB-A + USB-C) | Yes (USB-C) |
| Power Input | USB-C | USB-C |
| Stereo | Yes | No |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 4 lbs (1.83 kg) | 5.3 lbs (2.4 kg) |
| App | No | - |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | - |
| Built-in Microphone | Yes | - |
| EQ | No | - |
| IP Rating | IPX7 | IP67 |
| Bluetooth Version | 4.1 | 5.4 |
| Dimensions | 11.7” x 5.4” x 5.3” (298 x 136 x 134 mm) | 8.6”H x 7.2”W x 5.7”D (218 x 183 x 146 mm) |
| Drivers | 2x 70mm woofers, 2x 20mm tweeters | 1x 4.5” (114mm) woofer + 1x 1.3” (33mm) titanium tweeter |
| Frequency Response | 53.5Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 100W | - |
| Digital Aux Input | No | - |
| Strap | Yes (detachable shoulder strap) | No |
Where the Ratings Come From
- JBL Xtreme 3: reviews by Alan Ross, Dominik and Mateusz Cholewa.
- Turtlebox Cub: reviews by Field Series, Gamesky and Field & Stream.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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