Short answer: the Soundboks 4, if the price is within reach. These rank #29 and #72 out of 75 portable speakers, with the Soundboks 4 at $1199 costing far more than the Turtlebox’s $329.
The Turtlebox’s cons are unusually blunt about its shortcomings. They state it sounds horrible in YouTube sound samples, that the brand’s specs are largely exaggerated, that it’s only rated at 50W and will never hit its claimed loudness at a standard one-meter measuring distance, and that it has barely any bass and rattles at high volume. Its pros still credit it as waterproof and crushproof with punchy bass and a 25 hour battery.
The Soundboks 4 is built for genuinely high output. Its pros describe it as tied for the loudest battery powered speaker available, with high efficiency drivers that reach two to three times the volume of typical speakers for the same wattage, plus a removable 40 hour battery. Its cons are comparatively minor: it’s very large, not as neutral or deep in bass as the top ranked party speakers, and it charges from an external power brick rather than USB-C, the same charging limitation the original Turtlebox has.
Buy the Soundboks 4 for genuinely class-leading loudness and a removable battery, if you can justify the price.
Buy the Turtlebox only if the much lower price is the deciding factor, understanding that its own cons describe weak bass and exaggerated specs.
Skip the Turtlebox if sound quality matters to you. It ranks near the bottom of the 75 boombox speakers.
There is a real battery-life gap here: the Soundboks 4 is rated for 40 hours, the Turtlebox only 25 hours.
Specifications Side By Side
| Soundboks 4 | Turtlebox | |
|---|---|---|
| Price | $1199 | $329 Discontinued |
| Ranked | #29 of 51 in Party Size Portable Bluetooth Speakers | #72 of 75 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 52Hz | ~65Hz |
| Battery Life | 40 hours (Manufacturer specified) | 25 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC | SBC |
| Bluetooth Version | 5.0 | 4.0 |
| Dimensions | 25.6" x 17" x 13" (650.2 x 431.8 x 330.2 mm) | 12" x 7" x 8.7" (305 x 178 x 222 mm) |
| Drivers | 2x 10" woofers, 1" compression driver | 1x 6x9" (152x228mm) woofer + 1x 1" (25mm) tweeter |
| EQ | Yes | No |
| Frequency Response | 40Hz - 20kHz (Manufacturer specified) | - |
| Guitar Input | Yes | - |
| IP Rating | IP65 | IP67 |
| Max Volume | 126dB | - |
| Microphone Input | Yes | - |
| Party Mode | Yes (TeamUp, up to 5 speakers) | No |
| Power Bank | No | No |
| Power Input | AC Power cord | AC Power brick |
| Removable Battery | Yes | - |
| SKAA | Yes | - |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | No | No |
| Weight | 34 lbs / 15.4 kg | 10 lbs / 4.54 kg |
| Output Power | 3 x 72W | 50W |
| Digital Aux Input | No | No |
| MicroSD Playback | - | Yes |
| Built in Microphone | - | No |
| Discontinued | - | Yes |
Related Speaker Comparisons
Other pairings from the same speaker class worth checking:
- Soundboks Mix vs Soundboks 3
- Soundboks 3 vs Soundboks Go
- Teufel Rockster Neo vs Teufel Rockster Air
- Soundboks 4 vs Mackie Thump Go
- Onn XL Wireless Party Speaker vs Soundboks 4
Prices on this page were last checked September 8, 2026 at 6:02 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
Soundboks 4: $1199 Soundboks Amazon eBay
Pros: Tied for the loudest battery powered speaker. Removable 40 hour battery. High efficiency drivers reach 2-3x the volume of typical speakers for the same wattage.
Cons: Very large. Not as neutral or as deep of bass as the above Partyboxes. Not stereo. External power brick for charging.
Full Soundboks 4 review and specifications →
| App | Yes |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 52Hz |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.0 |
| Digital Aux Input | No |
| Dimensions | 25.6" x 17" x 13" (650.2 x 431.8 x 330.2 mm) |
| Drivers | 2x 10" woofers, 1" compression driver |
| EQ | Yes |
| Frequency Response | 40Hz - 20kHz (Manufacturer specified) |
| Guitar Input | Yes |
| IP Rating | IP65 |
| Max Volume | 126dB |
| Microphone Input | Yes |
| Omnidirectional | No |
| Output Power | 3 x 72W |
| Party Mode | Yes (TeamUp, up to 5 speakers) |
| Power Bank | No |
| Power Input | AC Power cord |
| Removable Battery | Yes |
| SKAA | Yes |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 34 lbs / 15.4 kg |
- Links
- Reviews, Comparisons and Sound Samples
- GYMCADDY: SOUNDBOKS Gen 4 Review - Better Sound And More Power Efficient More from GYMCADDY →
- Flossy Carter: SOUNDBOKS 4 - The World’s LOUDEST Bluetooth Speaker! More from FlossyCarter →
- Oluv Patreon: SoundBoks 4 vs Stormbox Blast - first impressions More from Oluv’Sone →
- GYMCADDY: JBL Partybox Ultimate Vs SOUNDBOKS 4 & Sony XV900 - Is It Worth It?
- M1MTechChannel: SOUNDBOKS hat gekocht: Die neue MIX liefert brutal ab! More from M1MTechChannel →
- Head-to-Head Comparisons
Turtlebox: $329 Discontinued Amazon eBay
Pros: Waterproof and crushproof, loud with punchy bass. 25 hour battery life (6 hours at full volume). Pairs with a second unit for stereo.
Cons: Sounds basically identical to the later Gen 2 and Gen 3: each generation mainly added features, not sound quality. They pretty much lie about all their specs and sound horrible in all youtube sound samples. Only 50w (from their indigogo page), will never hit 120db at a reasonable measuring distance. Putting your db meter right against the speaker doesn’t count, 1 meter distance is the standard. Barely any bass. Rattles at high volume. Uses an external AC power brick to charge, before USB-C was added on the Gen 2. Looking at it, it appears to be a generic car 2-way 6x9 speaker in a plastic box. Discontinued.
Full Turtlebox review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | ~65Hz |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.0 |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 12" x 7" x 8.7" (305 x 178 x 222 mm) |
| Discontinued | Yes |
| Drivers | 1x 6x9" (152x228mm) woofer + 1x 1" (25mm) tweeter |
| EQ | No |
| IP Rating | IP67 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Output Power | 50W |
| Party Mode | No |
| Power Bank | No |
| Power Input | AC Power brick |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 10 lbs / 4.54 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons