Short answer: the Teufel Boomster 4. It ranks #44 of 89 boombox speakers by sound quality (rated 3.4/5); the Onn Medium Party Speaker Gen 2 ranks #58 (rated 3.1/5).
What the Teufel Boomster 4 does well: 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. Watch for: Side by side with the Boomster 2021 the sound barely changed, and it has a little less deep bass.
What the Onn Medium Party Speaker Gen 2 does well: Under $100 with LED lights synced to music. The catch: Lacking detail compared to the Onn Large Party Gen 2 and not as deep of bass.
Buy the Teufel Boomster 4. It is rated higher for sound quality than the Onn Medium Party Speaker Gen 2.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Teufel Boomster 4 | Onn Medium Party Speaker Gen 2 | |
|---|---|---|
| Price | €249.99 | $90 |
| Ranked | #44 of 89 in Boombox Size Portable Bluetooth Speakers | #58 of 89 in Boombox Size Portable Bluetooth Speakers |
| Drivers | 2x 20mm tweeters + 2x 65mm midrange drivers + 1x 110mm (4.3”) woofer, passive bass radiators | 8” (203mm) woofer + tweeters |
| Amplifier Power | 42W RMS | 50W RMS / 200W peak |
| Battery Life | 23 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| IP Rating | IPX5 | IPX7 |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.0 | - |
| Bluetooth Codecs | aptX HD, AAC, SBC | SBC |
| FM Tuner | Yes (plus DAB+) | Yes (16 presets) |
| Aux Input | Yes | Yes |
| Stereo | Yes | No |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Power Bank | No | Yes (USB-A, 5V/2.1A) |
| Power Input | USB-C | AC Power cord |
| Dimensions | 7.1”H x 14.6”W x 5.8”D (180 x 370 x 148 mm) | 9.6” x 10.9” x 15.1” (244.1 x 277.9 x 383 mm) |
| Weight | 8.3 lbs (3.75 kg) | 11 lbs (5 kg) |
| EQ | Yes (treble control) | No |
| App | No | No |
| Strap | No | - |
| Microphone Input | - | Yes (Karaoke mode with echo effect) |
| Party Mode | - | Yes (Party Sync Mode) |
| USB Playback | - | No |
| Built-in Microphone | - | No |
| Digital Aux Input | - | No |
| Lights | - | Yes |
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.
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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
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- Teufel Boomster 4 vs JBL Partybox On the Go
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Onn Medium Party Speaker Gen 2: $90 Walmart eBay
Pros: Under $100 with LED lights synced to music. Simple controls, solid Bluetooth range. Mic input for karaoke/emcee. Built-in FM radio with 16 presets. Aux port.
Cons: Lacking detail compared to the Onn Large Party Gen 2 and not as deep of bass. Only available in the United States and Canada.
Full Onn Medium Party Speaker Gen 2 review and specifications →
| Amplifier Power | 50W RMS / 200W peak |
|---|---|
| App | No |
| Aux Input | Yes |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 9.6” x 10.9” x 15.1” (244.1 x 277.9 x 383 mm) |
| Drivers | 8” (203mm) woofer + tweeters |
| EQ | No |
| FM Tuner | Yes (16 presets) |
| IP Rating | IPX7 |
| Lights | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | Yes (Party Sync Mode) |
| Power Bank | Yes (USB-A, 5V/2.1A) |
| Power Input | AC Power cord |
| Stereo | No |
| TWS | Yes |
| USB Playback | No |
| Weight | 11 lbs (5 kg) |
- Reviews, Comparisons and Sound Samples
- Jay’s Straight Up Reviews & More: ONN Large Party Speaker Gen 2 vs Medium Party Speaker Gen 2 🤜🤛A Family Feud🔌Plugged In Bass Boost On More from JaysStraightUpReviews →
- Jay’s Straight Up Reviews & More: Skullcandy Barrel XT vs ONN Medium Party Speaker Gen. 2 😬(Both Bass Boost On🔉) The Price is Right?🤑
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