Short answer: the Devialet Mania if sound quality matters most, the Marshall Stockwell III if price matters most. The Devialet Mania ranks #40 of 78 large speakers at $899. The Marshall Stockwell III ranks #56 at $249.99, $649.01 cheaper.
What the Marshall Stockwell III offers: 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. Watch for: 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.
What the Devialet Mania offers: Small, nice looking. Watch for: Not very loud. Extremely high price. Bass boosted. Tweeters are not aimed at you and there’s a huge treble rolloff off-axis as compared to the Beoplay P6 in the comparison video. Only 10 hours of battery. Oluv didn’t like the upper mids or treble (mentioned on his Patreon)
Buy the Marshall Stockwell III when the price outweighs sound quality for you, and the Devialet Mania when sound quality outweighs the price instead.
Battery life favors the Marshall Stockwell III: rated for 40 hours against 10 hours for the Devialet Mania.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Marshall Stockwell III | Devialet Mania | |
|---|---|---|
| Price | $249.99 | $899.00 |
| Ranked | #56 of 78 in Large Size Portable Bluetooth Speakers | #40 of 78 in Large Size Portable Bluetooth Speakers |
| Drivers | 1x 3" woofer, 2x 1.75" wide-band drivers | 4x aluminum fullrange drivers, 2x woofers |
| Frequency Response | 54Hz - 20kHz (Manufacturer specified) | 30Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 44W | 176W |
| Battery Life | 40+ hours (Manufacturer specified) | 10 hours (Manufacturer specified) |
| Bluetooth Version | 5.3 | 5.0 |
| Bluetooth Codecs | SBC, AAC, LE Audio with LC3 | SBC |
| IP Rating | IP55 | IPX4 |
| Weight | 2.9 lbs (1.3 kg) | 5.1 lbs (2.3 kg) |
| Dimensions | 7.1" x 6.4" x 2.9" (180 x 162 x 74 mm) | 6.9" x 7.6" x 5.5" (176 x 193 x 139 mm) |
| App | Yes | No |
| EQ | Yes (parametric, via app) | No |
| Aux Input | Yes | Yes |
| Digital Aux Input | No | No |
| Power Bank | Yes | No |
| Power Input | USB-C | USB-C |
| Stereo | Partially | Yes |
| Omnidirectional | Yes | No |
| Bass Extension (-10dB) | - | 47Hz |
| Wi-Fi | - | Yes |
| Built-in Microphone | - | Yes |
| Party Mode | - | No |
| TWS | - | Yes |
| Maximum SPL | - | 95dB (Manufacturer specified) |
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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
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Devialet Mania: $899.00 Amazon eBay
Pros: Small, nice looking. Measured bass extension of 47Hz (-10dB).
Cons: Not very loud. Extremely high price. Bass boosted. Tweeters are not aimed at you and there’s a huge treble rolloff off-axis as compared to the Beoplay P6 in the comparison video. Only 10 hours of battery. Oluv didn’t like the upper mids or treble (mentioned on his Patreon)
Full Devialet Mania review and specifications →
| Amplifier Power | 176W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 47Hz |
| Battery Life | 10 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 6.9" x 7.6" x 5.5" (176 x 193 x 139 mm) |
| Drivers | 4x aluminum fullrange drivers, 2x woofers |
| EQ | No |
| Frequency Response | 30Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX4 |
| Maximum SPL | 95dB (Manufacturer specified) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 5.1 lbs (2.3 kg) |
| Wi-Fi | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- That Speaker Guy: Devialet Mania vs Bang & Olufsen Beoplay P6 - Headphones On
- That Speaker Guy: Harman Kardon Onyx Studio 6 vs Devialet Mania
- HT Sound: Devialet Mania VS JBL Xtreme 2 - 60% Vol (Listen with headphones)
- BitsBytesBobs: Devialet Mania Music Audio Test Results
- Oluv Patreon: Visit at the Devialet store in Vienna More from Oluv’Sone →
- Head-to-Head Comparisons