Short answer: the JBL Xtreme 4 on measured sound quality, the W-King D9 on price. The JBL Xtreme 4 ranks #37 of 77 large speakers at $380. The W-King D9 ranks #65 at $71.24, $308.76 cheaper.
What the JBL Xtreme 4 offers: Removable battery. Slightly deeper bass than Xtreme 3. Use this EQ for the best sound quality. Watch for: 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.
What the W-King D9 offers: 60W RMS output, 106dB max volume, exceptional 40-hour battery life, power bank function, IPX6 waterproof, MicroSD and AUX support, dual drivers with passive radiators, Bluetooth 5.3, USB-C charging, EQ button, shockproof design Watch for: Very rolled off treble.
Buy the JBL Xtreme 4 when sound quality outweighs the price for you, and the W-King D9 when the price outweighs sound quality instead.
The W-King D9 is not a sound-quality pick. It sits near the bottom of the 77 large speakers; there are better options higher up.
Battery life favors the W-King D9: rated for 40 hours against 24 hours for the JBL Xtreme 4.
Specifications Side By Side
| JBL Xtreme 4 | W-King D9 | |
|---|---|---|
| Price | $380 | $71.24 |
| Ranked | #37 of 77 in Large Size Portable Bluetooth Speakers | #65 of 77 in Large Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | Yes |
| Battery Life | 24 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| EQ | Yes (5 band) | No |
| IP Rating | IP67 | IPX6 |
| Bluetooth Latency | 220ms | - |
| Max Volume | 106dB | 106dB |
| Party Mode | Yes (Auracast) | No |
| Power Bank | Yes (USB-C) | Yes (USB-A) |
| Power Input | USB-C | USB-C |
| Removable Battery | Yes | - |
| TWS | Yes | No |
| Weight | 4.6 lbs / 2.1 kg | 4.4 lbs / 2.0 kg |
| Bluetooth Codecs | SBC | SBC |
| Built in Microphone | Yes | Yes |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Bluetooth Version | 5.3 | 5.3 |
| Dimensions | 11.7" x 5.9" x 5.6" (297 x 149 x 141 mm) | 4.7" x 12.4" x 4.7" (120 x 315 x 120 mm) |
| Drivers | 2x 70mm woofers, 2x 19mm tweeters + 2x passive radiators | 2x 40mm drivers + passive radiators |
| Frequency Response | 44Hz - 20kHz (Manufacturer specified) | 80Hz - 16kHz (Manufacturer specified) |
| Output Power | 100W | 60W RMS |
| Digital Aux Input | No | No |
| Bass Extension (-10dB) | - | 47Hz |
| MicroSD Playback | - | Yes |
Related Speaker Comparisons
A few more comparisons worth a look in the same class:
- Marshall Kilburn II vs Sony SRS-XG300
- Marshall Middleton II vs W-King T9
- Marshall Kilburn II vs Soundcore Motion X600
- JBL Xtreme 4 vs onn Portable FM Boombox
- JBL Xtreme 4 vs Zealot S97
Prices on this page were last checked August 27, 2026 at 10:09 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 Xtreme 4: $380 Amazon B&H Photo Video eBay
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.
Full JBL Xtreme 4 review and specifications →
| 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 |
| Max Volume | 106dB |
| Omnidirectional | No |
| Output Power | 100W |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Removable Battery | Yes |
| Stereo | Yes |
| 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 →
- Reddit Search for JBL Xtreme 4 Review
- Head-to-Head Comparisons
W-King D9: $71.24 Amazon eBay
Pros: 60W RMS output, 106dB max volume, exceptional 40-hour battery life, power bank function, IPX6 waterproof, MicroSD and AUX support, dual drivers with passive radiators, Bluetooth 5.3, USB-C charging, EQ button, shockproof design
Cons: Very rolled off treble.
Full W-King D9 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 47Hz |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 4.7" x 12.4" x 4.7" (120 x 315 x 120 mm) |
| Drivers | 2x 40mm drivers + passive radiators |
| EQ | No |
| Frequency Response | 80Hz - 16kHz (Manufacturer specified) |
| IP Rating | IPX6 |
| Max Volume | 106dB |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Output Power | 60W RMS |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | No |
| Weight | 4.4 lbs / 2.0 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons