Short answer: the Teufel Boomster 4. It ranks #44 of 89 boombox speakers by sound quality (rated 3.4/5); the Turtlebox Gen 3 ranks #83 (rated 2.1/5).
Why pick the Teufel Boomster 4: Warmer and more open than the Boomster 2021 it replaces, with nicer, less harsh highs, a wide stereo image from its three-way layout (two 20mm tweeters, two 65mm midrange drivers and a 110mm woofer with passive radiators) and good detail. The tradeoff: Side by side with the Boomster 2021 the sound barely changed, and it has a little less deep bass.
What the Turtlebox Gen 3 does well: Waterproof (IP67, and it floats) and crushproof, with stainless steel hardware and quality amplifier parts inside. The tradeoff: Sounds basically identical to the original and the Gen 2: each generation mainly added features, not sound quality.
Buy the Teufel Boomster 4. It is rated higher for sound quality than the Turtlebox Gen 3.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Teufel Boomster 4 | Turtlebox Gen 3 | |
|---|---|---|
| Price | €249.99 | $430.00 |
| Ranked | #44 of 89 in Boombox Size Portable Bluetooth Speakers | #83 of 89 in Boombox Size Portable Bluetooth Speakers |
| Drivers | 2x 20mm tweeters + 2x 65mm midrange drivers + 1x 110mm (4.3”) woofer, passive bass radiators | 1x 6x9” (152x228mm) woofer + 1x 1” (25mm) tweeter |
| Amplifier Power | 42W RMS | 50W |
| Battery Life | 23 hours (Manufacturer specified) | 25 hours (Manufacturer specified) |
| IP Rating | IPX5 | IP67 |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.0 | 5.4 |
| Bluetooth Codecs | aptX HD, AAC, SBC | SBC |
| FM Tuner | Yes (plus DAB+) | - |
| Aux Input | Yes | Yes |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Power Bank | No | Yes (USB-C) |
| Power Input | USB-C | DC Barrel Connector (15V/3A) |
| Dimensions | 7.1”H x 14.6”W x 5.8”D (180 x 370 x 148 mm) | 12” x 7” x 8.7” (305 x 178 x 222 mm) |
| Weight | 8.3 lbs (3.75 kg) | 10 lbs (4.54 kg) |
| EQ | Yes (treble control) | No |
| App | No | No |
| Strap | No | No |
| Bass Extension (-10dB) | - | ~65Hz |
| MicroSD Playback | - | Yes |
| Party Mode | - | Yes (Turtlebox Party Mode) |
| USB Playback | - | No |
| Built-in Microphone | - | No |
| Digital Aux Input | - | No |
| Microphone Input | - | Yes (3.5mm) |
| Battery Capacity | - | 85Wh |
| Maximum SPL | - | 102dB (measured by Williston Audio Labs) |
Related Speaker Comparisons
How Teufel Boomster 4 compares with other leading options:
- Earfun Uboom X vs Teufel Boomster 4
- Tribit Stormbox Blast vs Teufel Boomster 4
- Harman Kardon Go + Play 3 vs Teufel Boomster 4
- JBL Partybox Encore 2 vs Teufel Boomster 4
- JBL Partybox Encore Essential 2 vs Teufel Boomster 4
Prices on this page were last checked September 30, 2026 at 2:57 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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
Teufel Boomster 4: €249.99 Teufel eBay
Older models: the Teufel Boomster 2021 (ranked lower, rated 3.4/5) and the Teufel Boomster NG (2017) (ranked lower, rated 3.2/5).
Pros: Warmer and more open than the Boomster 2021 it replaces, with nicer, less harsh highs, a wide stereo image from its three-way layout (two 20mm tweeters, two 65mm midrange drivers and a 110mm woofer with passive radiators) and good detail. Its new treble control and remote let you tame the top end. DAB+ and FM radio, a claimed 23 hours of battery at medium volume, IPX5, Bluetooth 5.0 with AAC and aptX HD, multipoint, an aux input, USB-C charging and stereo pairing.
Cons: Side by side with the Boomster 2021 the sound barely changed, and it has a little less deep bass. Against the Harman Kardon Go + Play 3 it sounds sharper and thinner, with weaker bass and a less natural stereo image, and its bass drops off at full volume. At 3.75 kg it is heavy for its size, it has no power bank output, and IPX5 is a step down from the older model’s IPX7.
Full Teufel Boomster 4 review and specifications →
| Amplifier Power | 42W RMS |
|---|---|
| App | No |
| Aux Input | Yes |
| Battery Life | 23 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | aptX HD, AAC, SBC |
| Bluetooth Version | 5.0 |
| Dimensions | 7.1”H x 14.6”W x 5.8”D (180 x 370 x 148 mm) |
| Drivers | 2x 20mm tweeters + 2x 65mm midrange drivers + 1x 110mm (4.3”) woofer, passive bass radiators |
| EQ | Yes (treble control) |
| FM Tuner | Yes (plus DAB+) |
| IP Rating | IPX5 |
| Omnidirectional | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| Weight | 8.3 lbs (3.75 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Mateusz Cholewa: Nowy TEUFEL Boomster 4 UNBOXING vs Boomster 3 Review in subtitles More from Mateusz Cholewa →
- Mateusz Cholewa: TEUFEL Boomster 4 vs HK Go Plus Play 3 & Opinion in Subtitles
- Dominik Reviews: Teufel BOOMSTER 4 vs BOOMSTER 2021 - No difference? Sound Battle! More from Dominik Reviews →
- Dominik Reviews: Teufel BOOMSTER 4 vs JBL Xtreme 4 - Not great for the size? Sound Test
- Dominik Reviews: Teufel BOOMSTER 4 vs Earfun UBOOM X - BASS!! - Sound Test
- Dominik Reviews: Teufel BOOMSTER 4 vs Bugani Brief Pro - Cheaper and Better! Sound Test
- Head-to-Head Comparisons
- Teufel Boomster 4 vs Teufel Boomster 2021
- Teufel Boomster 4 vs JBL Authentics 300
- Teufel Boomster 4 vs W-King X20
- Teufel Boomster 4 vs Soundcore Boom 2 Plus
- Teufel Boomster 4 vs Onn Medium Party Speaker Gen 2
- Teufel Boomster 4 vs Tribit Stormbox Blast 2
- Teufel Boomster 4 vs JBL Partybox On the Go
- Teufel Boomster 4 vs Bugani Brief Pro
- See all 26 comparisons
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).
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 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 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 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 →
| 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
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Turtlebox Gen 3 vs Turtlebox Gen 2
- Turtlebox Gen 3 vs Monster Rockin’ Roller 270
- Turtlebox Gen 3 vs Turtlebox
- Turtlebox Gen 3 vs ION Pathfinder 280
- Turtlebox Gen 3 vs ION Pathfinder 320
- Turtlebox Gen 3 vs Braven XXL 2
- Turtlebox Gen 3 vs Zealot S78
- Turtlebox Gen 3 vs W-King X10
- See all 96 comparisons