Short answer: the JBL Xtreme 5 on measured sound quality, the Marshall Stockwell III on price. The JBL Xtreme 5 ranks #2 of 78 large speakers at $399.95. The Marshall Stockwell III ranks #56 at $249.99, $149.96 cheaper.
This is a mismatch in both size and sound quality. The Stockwell III offers a compact 1.3kg cabinet with parametric EQ, wall/corner compensation, and IP55 protection for $249.99. The JBL Xtreme 5 offers a removable battery, bass reaching well below 40Hz, and excellent off-axis dispersion in a 2.9kg IP68-rated cabinet for $399.95.
Choose the Xtreme 5 for deeper bass and better dispersion: Reviewers find it beats similarly-priced rivals on bass depth and clarity, plays clean at volume, and holds up off-axis in a way the smaller Stockwell III can’t match, backed by a removable battery and IP68 protection.
Choose the Stockwell III for a smaller, lighter, cheaper speaker: At 1.3kg versus 2.9kg and $150 less, it’s a genuinely portable option where the Xtreme 5’s size and weight aren’t practical.
Buy the Marshall Stockwell III if the price matters more than sound quality. Buy the JBL Xtreme 5 if sound quality matters more than the price.
There is a real gap in water resistance: the JBL Xtreme 5 at IP68 (extended submersion) against the Marshall Stockwell III, which has IP55 (water jets).
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Marshall Stockwell III | JBL Xtreme 5 | |
|---|---|---|
| Price | $249.99 | $399.95 |
| Ranked | #56 of 78 in Large Size Portable Bluetooth Speakers | #2 of 78 in Large Size Portable Bluetooth Speakers |
| Drivers | 1x 3" woofer, 2x 1.75" wide-band drivers | 98x145mm woofer, 2x 20mm tweeters + 2x passive radiators |
| Frequency Response | 54Hz - 20kHz (Manufacturer specified) | 40Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 44W | 1 x 90W RMS Woofer + 2 x 20W RMS Tweeter (AC power mode) 1 x 60W RMS Woofer + 2 x 15W RMS Tweeter (Battery mode) |
| Battery Life | 40+ hours (Manufacturer specified) | 28 hours (Manufacturer specified) |
| Bluetooth Version | 5.3 | 6.0 |
| Bluetooth Codecs | SBC, AAC, LE Audio with LC3 | SBC, AAC, LC3 |
| IP Rating | IP55 | IP68 |
| Weight | 2.9 lbs (1.3 kg) | 6.4 lbs (2.9 kg) |
| Dimensions | 7.1" x 6.4" x 2.9" (180 x 162 x 74 mm) | 13.6" x 6.5" x 6.1" (346 x 165 x 155 mm) |
| App | Yes | Yes |
| EQ | Yes (parametric, via app) | Yes (7 band) |
| Aux Input | Yes | No |
| Digital Aux Input | No | Yes (USB-C) |
| Power Bank | Yes | Yes (USB-C, 5V/3A) |
| Power Input | USB-C | USB-C |
| Stereo | Partially | Partially (1 woofer) |
| Omnidirectional | Yes | No |
| Maximum SPL | - | 110dB (measured by Alan Ross Reviews) |
| Party Mode | - | Yes (Auracast) |
| Removable Battery | - | Yes |
| TWS | - | Yes |
| Built-in Microphone | - | No |
Related Speaker Comparisons
More worthwhile head-to-heads for JBL Xtreme 5:
- JBL Xtreme 5 vs Vifa Helsinki
- JBL Xtreme 5 vs Tribit Stormbox Lava
- Brane X vs JBL Xtreme 5
- JBL Xtreme 5 vs Minirig 4 with subwoofer
- JBL Xtreme 5 vs Minirig 3 with subwoofer
Prices on this page were last checked September 16, 2026 at 12:41 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
Marshall Stockwell III: $249.99 Marshall eBay
Pros: 40+ hour battery life with a user-replaceable battery, strap, sleeve and grilles. Doubles as a USB-C power bank. IP55 dust/water resistance. App includes parametric EQ, a Soundstage widening control, and wall/corner placement compensation. Endless-rotation control knobs.
Cons: Highs are recessed by default and need the treble control maxed to compensate, still lacking detail even then. Bass tends to sound resonant and boomy, with reported frequency cancellation and phase issues on complex material that EQ doesn’t fully resolve. Oluv’s A/B testing against the outgoing Stockwell 2 finds the default tuning muffled and muddy enough to prefer the seven-year-old original out of the box, and output loses dynamics and bass while turning harsh well below maximum volume. No aptX support.
Full Marshall Stockwell III review and specifications →
| Amplifier Power | 44W |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Battery Life | 40+ hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LE Audio with LC3 |
| Bluetooth Version | 5.3 |
| Digital Aux Input | No |
| Dimensions | 7.1" x 6.4" x 2.9" (180 x 162 x 74 mm) |
| Drivers | 1x 3" woofer, 2x 1.75" wide-band drivers |
| EQ | Yes (parametric, via app) |
| Frequency Response | 54Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP55 |
| Omnidirectional | Yes |
| Power Bank | Yes |
| Power Input | USB-C |
| Stereo | Partially |
| Weight | 2.9 lbs (1.3 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
JBL Xtreme 5: $399.95 Amazon B&H Photo Video eBay
Pros: Removable battery. Quite deep bass, reaching well below 40Hz. A fantastic sounding speaker with excellent off-axis dispersion, a big step up from older JBL portables. Beats the Soundcore Boom 2 and Tribit Stormbox Blast on bass depth and clarity. Plays clean at volume, unlike the JBL Boombox 4.
Cons: High priced. Some bass boost. A hole in the mid-upper bass which can’t be EQ’d out. Default EQ presets are weak (Signature is boring, Chill and Vocal are close to unusable) - needs the custom EQ to sound its best. Bigger and heavier than the Xtreme 4.
Setup: Try this Oluv EQ for the most neutral sound
Full JBL Xtreme 5 review and specifications →
| Amplifier Power | 1 x 90W RMS Woofer + 2 x 20W RMS Tweeter (AC power mode) 1 x 60W RMS Woofer + 2 x 15W RMS Tweeter (Battery mode) |
|---|---|
| App | Yes |
| Aux Input | No |
| Battery Life | 28 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LC3 |
| Bluetooth Version | 6.0 |
| Built-in Microphone | No |
| Digital Aux Input | Yes (USB-C) |
| Dimensions | 13.6" x 6.5" x 6.1" (346 x 165 x 155 mm) |
| Drivers | 98x145mm woofer, 2x 20mm tweeters + 2x passive radiators |
| EQ | Yes (7 band) |
| Frequency Response | 40Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP68 |
| Maximum SPL | 110dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB-C, 5V/3A) |
| Power Input | USB-C |
| Removable Battery | Yes |
| Stereo | Partially (1 woofer) |
| TWS | Yes |
| Weight | 6.4 lbs (2.9 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Joy & Oluv’Sone🔈3DAudio🎧& Music: JBL Xtreme 5 - universal EQ for best sound overall More from Oluv’Sone →
- Joy & Oluv’Sone🔈3DAudio🎧& Music: JBL Xtreme 5 - Best Bluetooth Speaker 2026 award
- Joy & Oluv’Sone🔈3DAudio🎧& Music: JBL Xtreme 5 vs Studio Monitors: too V-shaped or not to V-shaped, that’s the question!
- Joy & Oluv’Sone🔈3DAudio🎧& Music: JBL Xtreme 5 - outdoor test
- Joy & Oluv’Sone🔈3DAudio🎧& Music: Minirigs 4 with Sub 4 vs JBL Xtreme 5 - 1st impressions
- Oluv Patreon: VIFA Helsinki & JBL Xtreme 5 - listening test
- Oluv Patreon: JBL Xtreme 5 - 1st detailed impression with custom EQs
- Oluv Patreon: JBL Xtreme 5 - outdoor test
- Alan Ross Reviews: Brane X vs JBL Xtreme 5: Maximum Bass, No Mercy More from alanrossreviews →
- Alan Ross Reviews: JBL Xtreme 5 2026, massive upgrade over JBL Xtreme 4! Full tests!
- Alan Ross Reviews: JBL Xtreme 5 vs JBL Xtreme 4 in 2026
- Alan Ross Reviews: https://www.youtube.com/watch?v=K5ImoaGw3t0
- Alan Ross Reviews: JBL Xtreme 5 or the amazing Tribit Stormbox Blast? 🤔
- Head-to-Head Comparisons