Short answer: the Audiocase S5. It ranks #22 of 46 party speakers by sound quality at $645; the Soundboks 4 ranks #24 and costs $1199, so there is not much of a tradeoff to weigh.
What the Soundboks 4 gets right: Tied for the loudest battery-powered speaker, with a removable 40-hour battery. The catch: very large, not stereo, and behind the top Partyboxes on neutrality and bass.
On the Audiocase S5 side: Also has a removable battery, for a third less money. The tradeoff: boosted upper bass and less clarity than higher-ranked speakers - our notes call it generally worse than the far cheaper Tribit Stormbox Blast.
Buy the Audiocase S5. It ranks higher for sound quality than the Soundboks 4 and costs less, so there is no real case for the other one.
Specifications Side By Side
| Soundboks 4 | Audiocase S5 | |
|---|---|---|
| Price | $1199 | $645 Discontinued |
| Ranked | #24 of 46 in Party Size Portable Bluetooth Speakers | #22 of 46 in Party Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 52Hz | - |
| Battery Life | 40 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC | aptX, SBC |
| Bluetooth Version | 5.0 | 5.0 |
| Dimensions | 25.6" x 17" x 13" (650.2 x 431.8 x 330.2 mm) | 16.1" x 9.8" x 7.5" (410 x 250 x 190 mm) |
| Drivers | 2x 10" woofers, 1" compression driver | 2x 5" woofers, 1" tweeter |
| EQ | Yes | No |
| Frequency Response | 40Hz - 20kHz (Manufacturer specified) | - |
| Guitar Input | Yes | Yes |
| IP Rating | IP65 | None |
| Max Volume | 126dB | 108dB |
| Microphone Input | Yes | Yes (Karaoke mode with reverb effect) |
| Party Mode | Yes (TeamUp, up to 5 speakers) | Yes (wired link) |
| Power Bank | No | No |
| Power Input | AC Power cord | AC Power brick |
| Removable Battery | Yes | Yes |
| SKAA | Yes | - |
| Stereo | Yes | Yes |
| TWS | Yes | No |
| USB Playback | No | No |
| Weight | 34 lbs / 15.4 kg | 17.4 lbs / 7.9 kg |
| Output Power | 3 x 72W | 2 x 73W |
| Discontinued | - | Yes |
The Two Speakers In Full
Soundboks 4: $1199 Soundboks Amazon
Pros: Tied for the loudest battery powered speaker. Removable 40 hour battery.
Cons: Very large. Not as neutral or as deep of bass as the above Partyboxes. Not stereo. External power brick for charging.
| App | Yes |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 52Hz |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.0 |
| 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 |
| Max Volume | 126dB |
| Microphone Input | Yes |
| Output Power | 3 x 72W |
| Party Mode | Yes (TeamUp, up to 5 speakers) |
| Power Bank | No |
| Power Input | AC Power cord |
| Removable Battery | Yes |
| SKAA | Yes |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 34 lbs / 15.4 kg |
As an eBay Partner, I may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- GYMCADDY: SOUNDBOKS Gen 4 Review - Better Sound And More Power Efficient
- Flossy Carter: SOUNDBOKS 4 - The World’s LOUDEST Bluetooth Speaker!
- Oluv Patreon: SoundBoks 4 vs Stormbox Blast - first impressions
- GYMCADDY: JBL Partybox Ultimate Vs SOUNDBOKS 4 & Sony XV900 - Is It Worth It?
- Reddit Search for Soundboks 4 Review
- Head-to-Head Comparisons
Audiocase S5: $645 Discontinued
Pros: Removable battery
Cons: Not stereo. Boosted upper bass, not as much clarity as higher ranked speakers. Generally worse overall than the much cheaper Stormbox Blast. Discontinued.
| App | No |
|---|---|
| Aux Input | Yes |
| Battery Life | 30 hours (Manufacturer specified) |
| Bluetooth Codecs | aptX, SBC |
| Bluetooth Version | 5.0 |
| Dimensions | 16.1" x 9.8" x 7.5" (410 x 250 x 190 mm) |
| Discontinued | Yes |
| Drivers | 2x 5" woofers, 1" tweeter |
| EQ | No |
| Guitar Input | Yes |
| IP Rating | None |
| Max Volume | 108dB |
| Microphone Input | Yes (Karaoke mode with reverb effect) |
| Output Power | 2 x 73W |
| Party Mode | Yes (wired link) |
| Power Bank | No |
| Power Input | AC Power brick |
| Removable Battery | Yes |
| Stereo | Yes |
| TWS | No |
| USB Playback | No |
| Weight | 17.4 lbs / 7.9 kg |
As an eBay Partner, I may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
As an Amazon Associate I earn from qualifying purchases. As an eBay Partner, I may be compensated if you make a purchase.
Product prices and availability were last checked August 10, 2026 at 7:14 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.