Short answer: the Teufel Boomster 4, if you are buying new. The Teufel Boomster 2021 measures as well as it (#51 vs #50 of 113 boombox speakers, 3.4/5 vs 3.4/5) but is discontinued, so only consider it used; the Teufel Boomster 4 is still sold new.
The sound barely changed. Side by side, reviewers found the two very similar. The Boomster 4 is a little warmer and more open, with nicer, less harsh highs, but slightly less deep bass. Both use the same three-way layout of two tweeters, two midrange drivers and a woofer.
What is new: a treble control with a remote, USB-C charging, DAB+ alongside FM, and a claimed 23 hours of battery against 18. It also adds AAC and aptX HD.
What went backwards: water protection drops from IPX7 to IPX5. Both weigh 8.3 lbs (3.75 kg) and neither has a power bank output. The Boomster 2021 is discontinued.
Buy the Teufel Boomster 4, since the Teufel Boomster 2021 is discontinued and only worth hunting down used.
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Specifications Side By Side
| Teufel Boomster 4 | Teufel Boomster 2021 | |
|---|---|---|
| Price | €249.99 | €250 Discontinued |
| Ranked | #50 of 113 in Boombox Size Portable Bluetooth Speakers | #51 of 113 in Boombox Size Portable Bluetooth Speakers |
| Drivers | 2x 20mm tweeters + 2x 65mm midrange drivers + 1x 110mm (4.3”) woofer, passive bass radiators | 1x 110mm (4.3”) woofer + 2x 65mm midrange drivers + 2x 20mm tweeters |
| Amplifier Power | 42W RMS | 42W RMS |
| Battery Life | 23 hours (Manufacturer specified) | 18 hours (Manufacturer specified) |
| IP Rating | IPX5 | IPX7 |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.0 | 5.0 |
| Bluetooth Codecs | aptX HD, AAC, SBC | SBC |
| FM Tuner | Yes (plus DAB+) | Yes |
| Aux Input | Yes | Yes |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Power Bank | No | No |
| Power Input | USB-C | USB-C |
| Dimensions | 7.1”H x 14.6”W x 5.8”D (180 x 370 x 148 mm) | 14.6” x 7.1” x 5.8” (370 x 180 x 148 mm) |
| Weight | 8.3 lbs (3.75 kg) | 8.3 lbs (3.75 kg) |
| EQ | Yes (treble control) | No |
| App | No | No |
| Strap | No | No |
| Party Mode | - | No |
| USB Playback | - | No |
| Built-in Microphone | - | No |
| Digital Aux Input | - | No |
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