Short answer: the JBL Authentics 300. It ranks #40 of 89 boombox speakers by sound quality (rated 3.5/5); the Teufel Boomster 4 ranks #44 (rated 3.4/5).
What the JBL Authentics 300 does well: Integrates both Amazon Alexa and Google Assistant simultaneously (rare for smart speakers). The tradeoff: Narrow sounding, bass not as deep as others.
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.
Buy the JBL Authentics 300. It is rated higher for sound quality than the Teufel Boomster 4.
Water resistance is not close: the Teufel Boomster 4 is rated at IPX5 (water jets), well ahead of the JBL Authentics 300 at no water resistance.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| JBL Authentics 300 | Teufel Boomster 4 | |
|---|---|---|
| Price | $299.95 | €249.99 |
| Ranked | #40 of 89 in Boombox Size Portable Bluetooth Speakers | #44 of 89 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | No |
| Bass Extension (-10dB) | 45Hz | - |
| Battery Life | 8 hours (Manufacturer specified) | 23 hours (Manufacturer specified) |
| EQ | Yes (App EQ) | Yes (treble control) |
| IP Rating | None | IPX5 |
| Maximum SPL | 100dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Wi-Fi Multi-Room) | - |
| Power Input | AC Power cable | USB-C |
| Stereo | Partially (1 woofer) | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 10.8 lbs (4.9 kg) | 8.3 lbs (3.75 kg) |
| Wi-Fi | Yes | - |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | aptX HD, AAC, SBC |
| Power Bank | No | No |
| USB Playback | Yes | - |
| Built-in Microphone | Yes | - |
| MicroSD Playback | No | - |
| Aux Input | No | Yes |
| Amplifier Power | 100W | 42W RMS |
| Dimensions | 13.5” x 7.7” x 7.1” (342 x 195.6 x 180.3 mm) | 7.1”H x 14.6”W x 5.8”D (180 x 370 x 148 mm) |
| Drivers | 1” tweeter + 4” woofer + passive radiators | 2x 20mm tweeters + 2x 65mm midrange drivers + 1x 110mm (4.3”) woofer, passive bass radiators |
| Digital Aux Input | No | - |
| Bluetooth Version | 5.3 | 5.0 |
| Voice Assistants | Amazon Alexa & Google Assistant (simultaneous) | - |
| Strap | No | No |
| FM Tuner | - | Yes (plus DAB+) |
Related Speaker Comparisons
More top alternatives to JBL Authentics 300:
- Tribit Stormbox Blast vs JBL Authentics 300
- Harman Kardon Go + Play 3 vs JBL Authentics 300
- JBL Partybox Encore 2 vs JBL Authentics 300
- JBL PartyBox On-The-Go 2 Plus vs JBL Authentics 300
- JBL Partybox Encore Essential 2 vs JBL Authentics 300
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
JBL Authentics 300: $299.95 Amazon eBay
Pros: Integrates both Amazon Alexa and Google Assistant simultaneously (rare for smart speakers). Retro seventies design with leather and Quadrex grille. 100-watt amp, carries well with leather-trimmed handle. Rechargeable battery rated ~8 hours. Measured bass extension of 45Hz (-10dB).
Cons: Narrow sounding, bass not as deep as others. Peaky upper mids. No TWS. No IP rating. Not as loud as others. Not much battery life.
Full JBL Authentics 300 review and specifications →
| Amplifier Power | 100W |
|---|---|
| App | Yes |
| Aux Input | No |
| Bass Extension (-10dB) | 45Hz |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 13.5” x 7.7” x 7.1” (342 x 195.6 x 180.3 mm) |
| Drivers | 1” tweeter + 4” woofer + passive radiators |
| EQ | Yes (App EQ) |
| IP Rating | None |
| Maximum SPL | 100dB (measured by Alan Ross Reviews) |
| MicroSD Playback | No |
| Omnidirectional | No |
| Party Mode | Yes (Wi-Fi Multi-Room) |
| Power Bank | No |
| Power Input | AC Power cable |
| Stereo | Partially (1 woofer) |
| Strap | No |
| TWS | Yes |
| USB Playback | Yes |
| Voice Assistants | Amazon Alexa & Google Assistant (simultaneous) |
| Weight | 10.8 lbs (4.9 kg) |
| Wi-Fi | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- JOY‘s 🎧3D🔈Audio-Show: JBL Authentics 300 - sound quality test More from Oluv’Sone →
- Oluv Patreon: JBL Authentics 300 - update
- Oluv Patreon: JBL Authentics 300 - listening session
- Alan Ross Reviews: Not quite! JBL Authentics 300 review and sound test vs Boombox 3, Encore and Stormbox Blast More from alanrossreviews →
- Head-to-Head Comparisons
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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
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