Short answer: the Ultimate Ears Megaboom 3 for ruggedness, with a caveat on bass. It is IP67 rated, floats and survives drops from up to 1 meter, but it is not stereo and our notes say it has barely any bass. The Teufel Rockster Go also handles water and drops, adds a wide Dynamore soundstage, and still suffers from rolled off treble and strange mids.
Buy the Ultimate Ears Megaboom 3. It is rated higher for sound quality, and the Teufel Rockster Go is discontinued, so it is only available used.
There is a real battery-life gap here: the Ultimate Ears Megaboom 3 is rated for 20 hours, the Teufel Rockster Go only 12 hours.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Teufel Rockster Go | Ultimate Ears Megaboom 3 | |
|---|---|---|
| Price | €83.00 Discontinued | $111.63 |
| Ranked | #126 of 164 in Medium Size Portable Bluetooth Speakers | #105 of 164 in Medium Size Portable Bluetooth Speakers |
| Aux Input | Yes | No |
| Battery Life | 12 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| IP Rating | IPX7 | IPX7 |
| Weight | 1.5 lbs (700 g) | 2 lbs (925 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.0 | 4.2 |
| Bluetooth Codecs | aptX, SBC | SBC |
| Dimensions | 8.3” x 3.9” x 3.9” (210 x 100 x 100 mm) | 3.4” x 8.9” x 3.4” (87 x 225 x 87 mm) |
| Drivers | 2x 45mm full-range drivers + 1x passive radiator | 2x 50mm fullrange |
| TWS | Yes | Yes |
| Party Mode | Yes (Party Link, 2 devices) | Yes (PartyUp up to 50 speakers) |
| Built-in Microphone | Yes | - |
| Stereo | Yes | No |
| Omnidirectional | No | Yes |
| Digital Aux Input | No | No |
| App | No | Yes (UE | BOOM app) |
| EQ | No | Yes (App EQ) |
| Power Input | Micro USB | Micro USB |
| Bass Extension (-10dB) | - | 70Hz |
| Maximum SPL | - | 98dB (measured by Alan Ross Reviews) |
| Frequency Response | - | 60Hz - 20kHz (Manufacturer specified) |
| Strap | - | Yes (built-in loop) |
Related Speaker Comparisons
How Ultimate Ears Megaboom 3 compares with other leading options:
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- Soundcore Boost “upgraded” 2021 vs Ultimate Ears Megaboom 3
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Prices on this page were last checked October 4, 2026 at 9:58 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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The Two Speakers In Full
Teufel Rockster Go: €83.00 Discontinued eBay
Newer model: the Teufel Rockster Go 2, ranked higher, rated 3.2/5.
Pros: Clear mid-range with bright treble, wide soundstage via Dynamore processing, IP67 waterproof and durable, solid battery life, compact design with carrying strap
Cons: Rolled off treble, muffled sound, mids sound strange. Bass not very deep. Only available in Europe. Discontinued.
Full Teufel Rockster Go review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | aptX, SBC |
| Bluetooth Version | 4.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 8.3” x 3.9” x 3.9” (210 x 100 x 100 mm) |
| Drivers | 2x 45mm full-range drivers + 1x passive radiator |
| EQ | No |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Party Mode | Yes (Party Link, 2 devices) |
| Power Input | Micro USB |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.5 lbs (700 g) |
- Links
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons
- Teufel Rockster Go vs Sony SRS-XB30
- Teufel Rockster Go vs Soundcore Flare 2
- Teufel Rockster Go vs Marshall Emberton II
- Teufel Rockster Go vs Marshall Emberton III
- Teufel Rockster Go vs TDK A33
- Teufel Rockster Go vs Bose SoundLink Color II
- Teufel Rockster Go vs B&O Beosound Explore
- Teufel Rockster Go vs Tribit Stormbox Mini+
- See all 20 comparisons
Ultimate Ears Megaboom 3: $111.63 Amazon eBay
Newer model: the Ultimate Ears Megaboom 4, ranked lower, rated 2.1/5.
Pros: IP67 rated, floats, and survives drops from up to 1 meter. 20 hour battery life: about double most speakers this size. Measured bass extension of 70Hz (-10dB).
Cons: Not stereo, barely any bass. You can tell from the micro USB that they are just feeding you the same crap hardware over and over, this is inexcusable for a product released in 2018. Not technically a 360 speaker, only front and rear.
Full Ultimate Ears Megaboom 3 review and specifications →
| App | Yes (UE | BOOM app) |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 70Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Digital Aux Input | No |
| Dimensions | 3.4” x 8.9” x 3.4” (87 x 225 x 87 mm) |
| Drivers | 2x 50mm fullrange |
| EQ | Yes (App EQ) |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Maximum SPL | 98dB (measured by Alan Ross Reviews) |
| Omnidirectional | Yes |
| Party Mode | Yes (PartyUp up to 50 speakers) |
| Power Input | Micro USB |
| Stereo | No |
| Strap | Yes (built-in loop) |
| TWS | Yes |
| Weight | 2 lbs (925 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Ultimate Ears Megaboom 3 vs LG Xboom Grab
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- Ultimate Ears Megaboom 3 vs Soundcore 2
- Ultimate Ears Megaboom 3 vs Ultimate Ears Wonderboom 2
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- See all 89 comparisons