These are not really the same size class, and that is the honest framing here. The Bugani Brief Pro ranks #27 of 85 boombox speakers by sound quality at $99.98; the JBL Xtreme 4 ranks #40 of 83 large speakers by sound quality at $309.95.
Different sizes. The Brief Pro is a boombox with two 4” woofers and two 44mm tweeters. The Xtreme 4 is a large 2.1 kg speaker. Each is rated within its own class.
In a side by side sound test, listeners in the comments preferred the Brief Pro’s bigger, clearer sound, which comes from larger drivers. The Xtreme 4 measured about 106dB and benefits from its app EQ.
Toughness and features favor the JBL: IP67, a replaceable battery, a power bank output and Auracast. The Brief Pro has no published water rating. The evidence on the Brief Pro is listening comparisons rather than measurements.
Buy the Bugani Brief Pro at $99.98 for a boombox speaker, or the JBL Xtreme 4 at $309.95 for a large speaker instead.
If battery life is a priority, the JBL Xtreme 4 is rated for 24 hours versus 12 hours for the Bugani Brief Pro.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Bugani Brief Pro | JBL Xtreme 4 | |
|---|---|---|
| Price | $99.98 | $309.95 |
| Ranked | #27 of 85 in Boombox Size Portable Bluetooth Speakers | #40 of 83 in Large Size Portable Bluetooth Speakers |
| Amplifier Power | 80W RMS (160W peak) | 100W |
| Drivers | 2x 4” woofers + 2x 44mm tweeters | 2x 70mm woofers, 2x 19mm tweeters + 2x passive radiators |
| Battery Life | 12 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Bluetooth Version | 5.3 | 5.3 |
| TWS | Yes | Yes |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Strap | No | Yes (detachable shoulder strap) |
| App | - | Yes |
| Aux Input | - | No |
| EQ | - | Yes (5 band) |
| IP Rating | - | IP67 |
| Bluetooth Latency | - | 220ms |
| Maximum SPL | - | 106dB (measured by Alan Ross Reviews) |
| Party Mode | - | Yes (Auracast) |
| Power Bank | - | Yes (USB-C) |
| Power Input | - | USB-C |
| Removable Battery | - | Yes |
| Weight | - | 4.6 lbs (2.1 kg) |
| Bluetooth Codecs | - | SBC |
| Built-in Microphone | - | Yes |
| Dimensions | - | 11.7” x 5.9” x 5.6” (297 x 149 x 141 mm) |
| Frequency Response | - | 44Hz - 20kHz (Manufacturer specified) |
| Digital Aux Input | - | No |
Related Speaker Comparisons
More top alternatives to Bugani Brief Pro:
- Earfun Uboom X vs Bugani Brief Pro
- Harman Kardon Go + Play 3 vs Bugani Brief Pro
- Bugani Brief Pro vs Teufel Boomster 4
- JBL Xtreme 4 vs Soundcore Motion X500
- JBL Xtreme 4 vs Tribit Stormbox Lava
Prices on this page were last checked September 26, 2026 at 11:14 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
Bugani Brief Pro: $99.98 Amazon eBay
Pros: Crystal clear and detailed with good separation of instruments and vocals, impressive for a two-way layout of two 4” woofers and two 44mm tweeters on 80W RMS. It plays louder than the Harman Kardon Go + Play 3 and, in side by side sound tests, many listeners preferred it to the JBL Xtreme 4 and found it close to the EarFun UBoom X. A claimed 12 hours of battery, Bluetooth 5.3 and stereo pairing, at a low price.
Cons: It turns a little harsh and fatiguing at 80% to 100% volume while losing bass, and it doesn’t reach as deep as the Go + Play 3, which reviewers still preferred for its thicker, richer bass. Nothing so far shows how neutral its tuning is: the evidence is listening comparisons, not measurements. No published water rating.
Full Bugani Brief Pro review and specifications →
| Amplifier Power | 80W RMS (160W peak) |
|---|---|
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Version | 5.3 |
| Drivers | 2x 4” woofers + 2x 44mm tweeters |
| Omnidirectional | No |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
- Reviews, Comparisons and Sound Samples
- Jagist reviews: Bugani Brief Pro Vs Harmon Kardon Go Plus Play 3!!! More from Jagistreviews →
- Dominik Reviews: Bugani Brief Pro vs Harman Kardon Go + Play 3 - HiFI Sound Comparison! More from Dominik Reviews →
- Dominik Reviews: Bugani Brief Pro vs Earfun UBOOM X - Very similar? - Sound Test
- Dominik Reviews: Bugani Brief Pro vs JBL Xtreme 4 - Not so extreme? - Sound Test
- Dominik Reviews: Bugani Brief Pro vs Soundcore Boom 2 - Soundcore still holds up?
- Dominik Reviews: Teufel BOOMSTER 4 vs Bugani Brief Pro - Cheaper and Better! Sound Test
- Head-to-Head Comparisons
JBL Xtreme 4: $309.95 Amazon B&H Photo Video eBay
Newer model: the JBL Xtreme 5, ranked higher, rated 4.6/5.
Pros: A rugged 2.1kg portable with IP67 protection, a replaceable battery, USB-C power-bank output, Auracast, stereo pairing and a useful 5-band app EQ. Independent reviews find the midrange detailed and the sound clear, punchy and refined for outdoor use; it also reaches a strong 106dB maximum level and has excellent real-world battery life.
Cons: It cannot produce the deep rumble of a larger speaker, and bass compression increases near maximum volume. The front-facing layout has only modest off-axis consistency, Bluetooth latency is high for video, and the default balance benefits from EQ adjustment. There is no aux input, so wired sources are not supported. Out of the box it leans bass-boosted, with a dip between the upper bass and midrange that EQ cannot fix, and it pushes the upper mids and treble at high volume. It is also expensive.
Full JBL Xtreme 4 review and specifications →
| Amplifier Power | 100W |
|---|---|
| App | Yes |
| Aux Input | No |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 220ms |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 11.7” x 5.9” x 5.6” (297 x 149 x 141 mm) |
| Drivers | 2x 70mm woofers, 2x 19mm tweeters + 2x passive radiators |
| EQ | Yes (5 band) |
| Frequency Response | 44Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP67 |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Removable Battery | Yes |
| Stereo | Yes |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| Weight | 4.6 lbs (2.1 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- JOY‘s 🎧3D🔈Audio-Show: JBL Charge 6, Xtreme 4 & Earfun UBoom X - taking sound to the top More from Oluv’Sone →
- JOY‘s 🎧3D🔈Audio-Show: JBL Charge 6 vs JBL Xtreme 4 - outdoor test
- JOY‘s 🎧3D🔈Audio-Show: JBL Charge 6 vs JBL Xtreme 4 - basstest (bigger=better?)
- Alan Ross Reviews: JBL Xtreme 4 vs Flip 7 vs Charge 6 – The ULTIMATE JBL Speaker Showdown! More from alanrossreviews →
- Oluv Patreon: SoundCore Boom 3i - first impressions & EQs
- Mateusz Cholewa: TRIBIT StormBox LAVA Deep BASS 🆚 JBL XTREME 4 More from Mateusz Cholewa →
- Mateusz Cholewa: Marshall Middleton👌🎶 🆚 JBL Xtreme 4 🎶📢
- Oluv Patreon: JBL Xtreme 4 - sound analysis
- Oluv Patreon: JBL Xtreme 4 - unboxing & first impressions
- Oluv Patreon: Harman Kardon go+play 3 vs JBL Xtreme 4 - first impressions
- Dominik Reviews: JBL Xtreme 4 vs JBL Xtreme 3 Sound Test 😍 Best upgrade in the history? 😂 More from Dominik Reviews →
- M1MTechChannel: Welche JBL Partybox ist die BESTE ? Alle Partyboxen im Vergleich | 2026 More from M1MTechChannel →
- Mateusz Cholewa: BOGASING S8 Pro Max 100W vs JBL Xtreme 4 Audio Test
- Mateusz Cholewa: LOEWE We HEAR Pro Super Stereo vs JBL Xtreme 4
- Head-to-Head Comparisons