Short answer: the Brane X for the higher ranking, the JBL Xtreme 4 for the lower price. The Brane X ranks #4 of 75 large speakers at $500. The JBL Xtreme 4 ranks #36 at $380, $120 cheaper.
On the Brane X side: Very deep bass, the absolute deepest from this category. The catch: Boosted upper bass ~120hz, rolled off treble, so it’s missing detail up top.
The case for the JBL Xtreme 4: Removable battery. The tradeoff: Some bass boost.
Buy the Brane X if the ranking matters more than the price. Buy the JBL Xtreme 4 if the price matters more than the ranking.
Specifications Side By Side
| Brane X | JBL Xtreme 4 | |
|---|---|---|
| Price | $500 | $380 |
| Ranked | #4 of 75 in Large Size Portable Bluetooth Speakers | #36 of 75 in Large Size Portable Bluetooth Speakers |
| Aux Input | Yes | No |
| Aux Latency | 295ms default, 33ms with aux pass-through | - |
| Bass Extension (-10dB) | 31Hz | - |
| Battery Life | 12 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | aptX HD, aptX, AAC, SBC | SBC |
| IP Rating | IP57 | IP67 |
| Bluetooth Latency | 100ms | 220ms |
| Max Volume | 106dB | 106dB |
| Party Mode | Yes (Up to 8 speakers on wifi) | Yes (Auracast) |
| Power Input | AC Power brick | USB-C |
| Stereo | Yes | Yes |
| TWS | Yes | Yes |
| Weight | 7.7 lbs / 3.5 kg | 4.6 lbs / 2.1 kg |
| Wifi | Yes | - |
| App | No | Yes |
| Built in Microphone | Yes | Yes |
| EQ | No | Yes (5 band) |
| Power Bank | No | Yes |
| Dimensions | 9.3" x 7.0" x 6.1" (236 x 178 x 155 mm) | 11.7" x 5.9" x 5.6" (297 x 149 x 141 mm) |
| Drivers | 2x 2.5" midrange, 2x 0.75" tweeters + 6.5"x9" subwoofer | 2x 70mm woofers, 2x 19mm tweeters + 2x passive radiators |
| Frequency Response | 30Hz - 20kHz (Manufacturer specified) | 44Hz - 20kHz (Manufacturer specified) |
| Output Power | 200W | 100W |
| Removable Battery | - | Yes |
| Bluetooth Version | - | 5.3 |
The Two Speakers In Full
Brane X: $500 Amazon
Pros: Very deep bass, the absolute deepest from this category. Medium bass boost is the most balanced.
Cons: Boosted upper bass ~120hz, rolled off treble, so it’s missing detail up top. Battery life isn’t great in real world use. High priced. Annoying robot voice announcements. A lot of aux input latency.
| App | No |
|---|---|
| Aux Input | Yes |
| Aux Latency | 295ms default, 33ms with aux pass-through |
| Bass Extension (-10dB) | 31Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | aptX HD, aptX, AAC, SBC |
| Bluetooth Latency | 100ms |
| Built in Microphone | Yes |
| Dimensions | 9.3" x 7.0" x 6.1" (236 x 178 x 155 mm) |
| Drivers | 2x 2.5" midrange, 2x 0.75" tweeters + 6.5"x9" subwoofer |
| EQ | No |
| Frequency Response | 30Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP57 |
| Max Volume | 106dB |
| Output Power | 200W |
| Party Mode | Yes (Up to 8 speakers on wifi) |
| Power Bank | No |
| Power Input | AC Power brick |
| Stereo | Yes |
| TWS | Yes |
| Weight | 7.7 lbs / 3.5 kg |
| Wifi | Yes |
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: This speaker left me shocked! Brane X, they said it defies the laws of physics!
- Alan Ross Reviews: Brane X vs JBL Xtreme 5: Maximum Bass, No Mercy
- Alan Ross Reviews: JBL Boombox 4 HUMILIATES Brane X?! Ultimate Bass Battle!
- Alan Ross Reviews: Minirig 2.1 or the Brane X or the Harman Kardon Go Play 3?
- mark: Brane X Speaker Review 2
- mark: Brane X Speaker Review
- Head-to-Head Comparisons
- Links
JBL Xtreme 4: $380 Amazon Bhphotovideo
Pros: Removable battery. Slightly deeper bass than Xtreme 3. Use this EQ for the best sound quality.
Cons: High priced. Some bass boost. Dip in the upper bass to midrange makes it sound strange which cannot be EQd out. Some upper mids and treble boost at high levels.
| 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 |
| 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 |
| Max Volume | 106dB |
| Output Power | 100W |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes |
| Power Input | USB-C |
| Removable Battery | Yes |
| Stereo | Yes |
| TWS | Yes |
| Weight | 4.6 lbs / 2.1 kg |
- Reviews, Comparisons and Sound Samples
- JOY‘s 🎧3D🔈Audio-Show: JBL Charge 6, Xtreme 4 & Earfun UBoom X - taking sound to the top
- 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!
- Oluv Patreon: SoundCore Boom 3i - first impressions & EQs
- Mateusz Cholewa: TRIBIT StormBox LAVA Deep BASS 🆚 JBL XTREME 4
- 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? 😂
- Head-to-Head Comparisons
- Links
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC 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.