Short answer: the Partybox Ultimate, and its own competitor’s review agrees. It ranks #3 of 13 large party speakers at $1,899.95. The Soundboks 4 ranks #10 of 17 in the larger party class at $1,199, $700.95 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 higher ranking and deeper bass. Buy the Soundboks 4 to save $700.95, 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.
A huge party speaker with deep, powerful bass and clear sound at extreme volume, plus Wi-Fi and karaoke inputs.
A very loud battery party speaker with two 10 inch woofers and a removable 40 hour battery for big outdoor gatherings.
Prices on this page were last checked November 7, 2026 at 7:34 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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Specifications Side By Side
| JBL Partybox Ultimate | Soundboks 4 | |
|---|---|---|
| Price | $1,899.95 | $1199 |
| Ranked | #3 of 13 in Large Party Size Portable Bluetooth Speakers | #10 of 17 in Battery-Powered PA Speakers |
| App | Yes | Yes |
| Aux Input | Yes | Yes |
| Battery Life | No Battery | 40 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| 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 | - |
| Strap | No | - |
| Passive | - | No |
| 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 |
| Rigging | - | 35mm pole mount socket |
Watch Them Compared
Videos and reviews that test both speakers side by side.
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