Different classes, so treat this as a step-up-or-not question rather than a head-to-head. The Turtlebox Cub ranks #85 of 120 large speakers by sound quality at $330; the EcoXGear Defender ranks #85 of 113 boombox speakers by sound quality at $299.99.

Both are built for the outdoors, IP67 waterproof and tough. The Defender floats and adds a flashlight and bottle opener. The Cub adds stainless steel tie-downs.
Sound: the Defender gets very loud for its size but uses a single front driver with narrow dispersion, and its bass does not reach as deep as competitors. The Cub uses a woofer plus a separate titanium tweeter, with warm, bass-forward tuning in the reviews so far.
Size and battery: the Cub is 5.3 lbs (2.4 kg) with a claimed 14+ hours. The Defender is 9.9 lbs (4.5 kg) with a claimed 25 hours and an aux input. Both have a USB-C power bank.
The Defender has no party mode; the Cub links to other Turtleboxes and pairs in stereo.
Buy the Turtlebox Cub at $330 for a large speaker, or the EcoXGear Defender at $299.99 for a boombox speaker instead.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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Specifications Side By Side
| Turtlebox Cub | EcoXGear Defender | |
|---|---|---|
| Price | $330.00 | $299.99 |
| Ranked | #85 of 120 in Large Size Portable Bluetooth Speakers | #85 of 113 in Boombox Size Portable Bluetooth Speakers |
| Bluetooth Version | 5.4 | 5.1 |
| Drivers | 1x 4.5” (114mm) woofer + 1x 1.3” (33mm) titanium tweeter | 52mm full-range driver |
| Battery Life | 14+ hours (Manufacturer specified) | 25 hours (Manufacturer specified) |
| IP Rating | IP67 | IP67 |
| Weight | 5.3 lbs (2.4 kg) | 10 lbs (4.54 kg) |
| Dimensions | 8.6”H x 7.2”W x 5.7”D (218 x 183 x 146 mm) | 6.7” x 15.4” x 9.6” (170.2 x 391.2 x 243.8 mm) |
| Power Bank | Yes (USB-C) | Yes (USB-C, 5V/2.1A) |
| Power Input | USB-C | USB-C |
| Party Mode | Yes (Party Mode) | No |
| TWS | Yes | Yes |
| Stereo | No | No |
| Omnidirectional | No | No |
| Strap | No | No |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | - | SBC |
| App | - | No |
| EQ | - | Yes |
| USB Playback | - | No |
| Built-in Microphone | - | Yes |
| FM Tuner | - | No |
| Amplifier Power | - | 100W |
| Aux Input | - | Yes |
| Digital Aux Input | - | No |
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