Short answer: the Partybox Ultimate, and its own competitor’s review agrees. It ranks #2 of 12 large party speakers at $1699.95. The Soundboks 4 ranks #6 of 14 in the larger party class at $1199, $500.95 less, and its own cons state it isn’t as neutral or as deep in bass as the above Partyboxes.
The Soundboks 4 is tied for the loudest battery-powered speaker on the site, with a removable 40-hour battery, but it isn’t stereo and charges from an external power brick rather than a standard cable.
The Partybox Ultimate’s claim is specific: the absolute deepest bass of any Bluetooth speaker here, alongside the same handle, wheels, and lightshow convenience the rest of the Partybox line offers.
Buy the Partybox Ultimate if the price gap is acceptable for the top spot. Buy the Soundboks 4 to save $500.95, understanding our notes rank it below the JBL flagships on bass and neutrality.
Still deciding? The full Portable Bluetooth rankings and PA & Live Sound rankings cover every ranked option.
Specifications Side By Side
| JBL Partybox Ultimate | Soundboks 4 | |
|---|---|---|
| Price | $1,699.95 | $1199 |
| Ranked | #2 of 12 in Large Party Size Portable Bluetooth Speakers | #6 of 14 in Battery-Powered PA Speakers |
| App | Yes | Yes |
| Aux Input | Yes | Yes |
| Battery Life | No Battery | 40 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC | SBC |
| EQ | Yes (3 band) | Yes |
| Guitar Input | Yes | Yes |
| IP Rating | IPX4 | IP65 |
| Microphone Input | Yes (Karaoke mode with echo effect) | Yes |
| Power Bank | Yes (USB-A, 5V/2.1A) | No |
| Power Input | AC Power cord | AC Power cord |
| TWS | Yes | Yes |
| USB Playback | Yes | No |
| Weight | 86 lbs (39 kg) | 34 lbs (15.4 kg) |
| Wi-Fi | Yes | - |
| Built-in Microphone | No | - |
| Party Mode | Yes (Auracast) | Yes (TeamUp, up to 5 speakers) |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Bluetooth Version | 5.3 | 5.0 |
| Dimensions | 17.9" x 41.3" x 17.3" (455 x 1049 x 440 mm) | 25.6" x 17" x 13" (650.2 x 431.8 x 330.2 mm) |
| Drivers | 2x 9" subwoofer, 2x 4.5" midrange, 2x 2.75" tweeter | 2x 10" woofers, 1" compression driver |
| Amplifier Power | 1100W | 216W (3x 72W) |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Wheels | Yes | - |
| Bass Extension (-10dB) | - | 52Hz |
| Frequency Response | - | 40Hz - 20kHz (Manufacturer specified) |
| Inputs | - | 2x XLR/6.3mm combo (mic/instrument), 3.5mm stereo, Bluetooth |
| Maximum SPL | - | 126dB |
| XLR Input | - | Yes (2x combo) |
| Removable Battery | - | Yes |
| SKAA | - | Yes |
| Configuration | - | Battery-powered 3-way active PA |
| Cabinet Material | - | Poplar plywood |
| DSP | - | App EQ |
| Bluetooth | - | Yes |
| Rigging | - | 35mm pole mount socket |
Related Speaker Comparisons
How JBL Partybox Ultimate compares with other leading options:
- Sony ULT Tower Max vs JBL Partybox Ultimate
- JBL Partybox 1000 vs JBL Partybox Ultimate
- JBL Partybox Ultimate vs Teufel Rockster 2
- JBL Partybox 720 vs JBL Partybox Ultimate
- JBL Partybox 710 vs JBL Partybox Ultimate
Prices on this page were last checked September 22, 2026 at 5:11 AM 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 Partybox Ultimate: $1,699.95 Amazon B&H Photo Video eBay
Pros: A true large-venue party speaker: its 1,100W system, dual 9-inch woofers and six-driver array produce exceptionally deep, authoritative bass and very high clean output. Independent reviews praise its unusually clear, articulate sound at extreme levels. Wi-Fi streaming, app EQ, inputs for two mics/guitar, USB playback, Auracast, a polished light show and wheels make it unusually complete for karaoke and DJ-style use.
Cons: At 39kg and more than a metre tall, this is not casually portable despite the wheels. It needs AC power, has no battery and only IPX4 splash resistance. Reviews also note that its bass-heavy presentation can obscure fine detail and overwhelm a small room; its size and cost only make sense for very large spaces or frequent events.
Full JBL Partybox Ultimate review and specifications →
| Amplifier Power | 1100W |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Battery Life | No Battery |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 17.9" x 41.3" x 17.3" (455 x 1049 x 440 mm) |
| Drivers | 2x 9" subwoofer, 2x 4.5" midrange, 2x 2.75" tweeter |
| EQ | Yes (3 band) |
| Guitar Input | Yes |
| IP Rating | IPX4 |
| Lights | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB-A, 5V/2.1A) |
| Power Input | AC Power cord |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 86 lbs (39 kg) |
| Wheels | Yes |
| Wi-Fi | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- GYMCADDY: JBL Partybox Ultimate Vs SOUNDBOKS 4 & Sony XV900 - Is It Worth It? More from GYMCADDY →
- GYMCADDY: JBL Partybox Ultimate Vs Partybox 710 - They’re Both Crazy, But There Is A Clear Winner
- Flossy Carter: JBL PartyBox Ultimate VS JBL PartyBox 1000 - Which Speaker is The BEST? More from FlossyCarter →
- GYMCADDY: JBL Partybox 720 Vs JBL Partybox Ultimate
- GYMCADDY: Sony ULT Tower 10 Vs JBL Partybox Ultimate & JBL Partybox 710
- M1MTechChannel: Vorsicht LAUT ⚠️ | Teufel Rockster 2 vs JBL Partybox 720 / Ultimate More from M1MTechChannel →
- M1MTechChannel: Welche JBL Partybox ist die BESTE ? Alle Partyboxen im Vergleich | 2026
- Head-to-Head Comparisons
- JBL Partybox Ultimate vs JBL Partybox 1000
- JBL Partybox Ultimate vs Sony ULT Tower Max
- JBL Partybox Ultimate vs Teufel Rockster 2
- JBL Partybox Ultimate vs JBL Partybox 720
- JBL Partybox Ultimate vs JBL Partybox 710
- JBL Partybox Ultimate vs JBL Partybox 520
- JBL Partybox Ultimate vs Teufel Rockster
- JBL Partybox Ultimate vs Sony ULT Tower 9
- See all 15 comparisons
Soundboks 4: $1199 Soundboks Amazon eBay
Pros: Tied for the loudest battery powered speaker. Removable 40 hour battery. High efficiency drivers reach 2-3x the volume of typical speakers for the same wattage. Measured bass extension of 52Hz (-10dB).
Cons: Very large. Not as neutral or as deep of bass as the above Partyboxes. Not stereo. External power brick for charging.
Full Soundboks 4 review and specifications →
| Amplifier Power | 216W (3x 72W) |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Bass Extension (-10dB) | 52Hz |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.0 |
| Cabinet Material | Poplar plywood |
| Configuration | Battery-powered 3-way active PA |
| DSP | App EQ |
| Digital Aux Input | No |
| Dimensions | 25.6" x 17" x 13" (650.2 x 431.8 x 330.2 mm) |
| Drivers | 2x 10" woofers, 1" compression driver |
| EQ | Yes |
| Frequency Response | 40Hz - 20kHz (Manufacturer specified) |
| Guitar Input | Yes |
| IP Rating | IP65 |
| Inputs | 2x XLR/6.3mm combo (mic/instrument), 3.5mm stereo, Bluetooth |
| Maximum SPL | 126dB |
| Microphone Input | Yes |
| Omnidirectional | No |
| Party Mode | Yes (TeamUp, up to 5 speakers) |
| Power Bank | No |
| Power Input | AC Power cord |
| Removable Battery | Yes |
| Rigging | 35mm pole mount socket |
| SKAA | Yes |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 34 lbs (15.4 kg) |
| XLR Input | Yes (2x combo) |
- Links
- Reviews, Comparisons and Sound Samples
- GYMCADDY: SOUNDBOKS Gen 4 Review - Better Sound And More Power Efficient More from GYMCADDY →
- Flossy Carter: SOUNDBOKS 4 - The World’s LOUDEST Bluetooth Speaker! More from FlossyCarter →
- Oluv Patreon: SoundBoks 4 vs Stormbox Blast - first impressions More from Oluv’Sone →
- GYMCADDY: JBL Partybox Ultimate Vs SOUNDBOKS 4 & Sony XV900 - Is It Worth It?
- M1MTechChannel: SOUNDBOKS hat gekocht: Die neue MIX liefert brutal ab! More from M1MTechChannel →
- Head-to-Head Comparisons