Short answer: the Teufel Boomster 4, if you are buying new. The Teufel Boomster 2021 ranks higher than the Turtlebox Gen 3 (#46 vs #85 of 91 boombox speakers) but is discontinued; its replacement, the Teufel Boomster 4, is rated 3.4/5 and is still sold new.
The Turtlebox Gen 3 is the longer-running pick. Waterproof (IP67, and it floats) and crushproof, with stainless steel hardware and quality amplifier parts inside. It is rated for 25 hours of battery against 18 for the Teufel Boomster 2021. It links with other speakers (Turtlebox Party Mode), which the Teufel Boomster 2021 cannot. The catch: Sounds basically identical to the original and the Turtlebox Gen 2: each generation mainly added features, not sound quality.
The Teufel Boomster 2021 is the better-sounding option.
Buy the Teufel Boomster 4, the replacement for the discontinued Teufel Boomster 2021; it is rated higher for sound quality than the Turtlebox Gen 3.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Turtlebox Gen 3 | Teufel Boomster 2021 | |
|---|---|---|
| Price | $430.00 | €250 Discontinued |
| Ranked | #85 of 91 in Boombox Size Portable Bluetooth Speakers | #46 of 91 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | ~65Hz | - |
| Battery Life | 25 hours (Manufacturer specified) | 18 hours (Manufacturer specified) |
| IP Rating | IP67 | IPX7 |
| MicroSD Playback | Yes | - |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Weight | 10 lbs (4.54 kg) | 8.3 lbs (3.75 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | No | No |
| TWS | Yes | Yes |
| Party Mode | Yes (Turtlebox Party Mode) | No |
| Power Bank | Yes (USB-C) | No |
| USB Playback | No | No |
| Built-in Microphone | No | No |
| Power Input | DC Barrel Connector (15V/3A) | USB-C |
| Bluetooth Version | 5.4 | 5.0 |
| Amplifier Power | 50W | 42W RMS |
| Dimensions | 12” x 7” x 8.7” (305 x 178 x 222 mm) | 14.6” x 7.1” x 5.8” (370 x 180 x 148 mm) |
| Drivers | 1x 6x9” (152x228mm) woofer + 1x 1” (25mm) tweeter | 1x 110mm (4.3”) woofer + 2x 65mm midrange drivers + 2x 20mm tweeters |
| Digital Aux Input | No | No |
| Strap | No | No |
| Microphone Input | Yes (3.5mm) | - |
| Battery Capacity | 85Wh | - |
| Maximum SPL | 102dB (measured by Williston Audio Labs) | - |
| FM Tuner | - | Yes |
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Prices on this page were last checked October 9, 2026 at 8:01 AM 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
Turtlebox Gen 3: $430.00 Amazon eBay
Older models: the Turtlebox Gen 2 (ranked lower, rated 2.1/5) and the Turtlebox (ranked lower, rated 2.1/5). See every Turtlebox generation.
Same family: the Turtlebox Cub (smaller model, rated 3/5), the Turtlebox Ranger (smaller model, rated 3.5/5) and the Turtlebox Grande (larger model, ranked higher, rated 2.6/5).
Pros: Waterproof (IP67, and it floats) and crushproof, with stainless steel hardware and quality amplifier parts inside. Loud for its class: Williston Audio Labs measured 102 dB at max volume, well above a Kicker Bullfrog BF400’s 96 dB. A big 85Wh battery rated for 25+ hours, a USB-C output that charges other devices, aux and microphone inputs, and true multi-speaker Party Mode on top of stereo pairing, plus Bluetooth 5.4. Measured bass extension of ~65Hz (-10dB).
Cons: Sounds basically identical to the original and the Turtlebox Gen 2: each generation mainly added features, not sound quality. The amp is tuned to a V shape, with boosted lows and highs and a dip in the mids, but the boost can’t make up for shallow extension: the bass is only down 10dB at about 65Hz, so there’s little real low end despite the boomy upper bass. The amp delivers only about 12W RMS at 1% distortion. In Williston Audio Labs’ side by side test most listeners preferred the much smaller Kicker Bullfrog BF400 for its cleaner sound, and a Pioneer PBM5 played louder at 105 dB. Nowhere near its claimed 120dB at a reasonable measuring distance. Rattles at high volume. It charges only from its own 15V barrel plug brick, not USB-C, and has no app or EQ. Inside is essentially a car audio 6x9 two way speaker in a plastic box.
Full Turtlebox Gen 3 review and specifications →
| Released | Feb 2025 (1 year ago) |
|---|---|
| Amplifier Power | 50W |
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~65Hz |
| Battery Capacity | 85Wh |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.4 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 12” x 7” x 8.7” (305 x 178 x 222 mm) |
| Drivers | 1x 6x9” (152x228mm) woofer + 1x 1” (25mm) tweeter |
| EQ | No |
| IP Rating | IP67 |
| Maximum SPL | 102dB (measured by Williston Audio Labs) |
| MicroSD Playback | Yes |
| Microphone Input | Yes (3.5mm) |
| Omnidirectional | No |
| Party Mode | Yes (Turtlebox Party Mode) |
| Power Bank | Yes (USB-C) |
| Power Input | DC Barrel Connector (15V/3A) |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| USB Playback | No |
| Weight | 10 lbs (4.54 kg) |
- Links
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Teufel Boomster 2021: €250 Discontinued eBay
Newer model: the Teufel Boomster 4, ranked higher, rated 3.4/5, released Oct 2025. It adds adjustable EQ, AAC and aptX HD. Battery life goes from 18 to 23 hours. Water resistance goes from IPX7 to IPX5.
Older model: the Teufel Boomster NG (2017) (ranked lower, rated 3.2/5). See every Teufel Boomster generation.
Pros: Teufel Boomster 2021 uses 1x 110mm (4.3”) woofer + 2x 65mm midrange drivers + 2x 20mm tweeters. Its 3.75 kg, claimed 18 hours (Manufacturer specified) battery life, IPX7 protection, aux input and stereo playback make it a practical option for its intended room or portable use.
Cons: There is no companion app. No EQ adjustment. Discontinued.
Full Teufel Boomster 2021 review and specifications →
| Released | Oct 2021 (5 years ago) |
|---|---|
| Amplifier Power | 42W RMS |
| App | No |
| Aux Input | Yes |
| Battery Life | 18 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.0 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 14.6” x 7.1” x 5.8” (370 x 180 x 148 mm) |
| Drivers | 1x 110mm (4.3”) woofer + 2x 65mm midrange drivers + 2x 20mm tweeters |
| EQ | No |
| FM Tuner | Yes |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| USB Playback | No |
| Weight | 8.3 lbs (3.75 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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