Short answer: the Marshall Stockwell II. It ranks #11 of 105 large speakers by sound quality (rated 4.5/5) at $226 and is still sold new; the Ultimate Ears Megablast ranks #87 (rated 2.8/5) and is discontinued, so it is only an option used.
The Marshall Stockwell II is the better-sounding, deeper-bass pick. Possibly the most natural sounding Marshall speaker, with excellent off-axis sound. Its bass reaches about 44Hz before falling 10dB, against 64Hz for the Ultimate Ears Megablast. The catch: Not very loud, and the added DSP reverb may annoy purists.
The Ultimate Ears Megablast is the lighter, tougher choice. Alexa integration (Wi-Fi + Bluetooth). At 2.4 lbs (1.1 kg) it weighs noticeably less than the Marshall Stockwell II at 3.1 lbs (1.4 kg). It is rated IPX7 against IPX4 for the Marshall Stockwell II. It plays in stereo from a single unit, unlike the Marshall Stockwell II. Watch for: Bass is not very deep compared to the competition.
Buy the Marshall Stockwell II. It is rated higher for sound quality; the Ultimate Ears Megablast is no longer sold new.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Marshall Stockwell II | Ultimate Ears Megablast | |
|---|---|---|
| Price | $226.00 | $240 Discontinued |
| Ranked | #11 of 105 in Large Size Portable Bluetooth Speakers | #87 of 105 in Large Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 44Hz | 64Hz |
| Battery Life | 20 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| IP Rating | IPX4 | IPX7 |
| Bluetooth Latency | 50ms | - |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) | - |
| Party Mode | No | No |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| Omnidirectional | Yes | No |
| TWS | No | Yes |
| Weight | 3.1 lbs (1.4 kg) | 2.4 lbs (1.1 kg) |
| App | No | No |
| Built-in Microphone | Yes | Yes |
| EQ | No | No |
| Power Bank | No | No |
| Bluetooth Version | 5.0 | 4.2 |
| Dimensions | 7.1” x 6.3” x 2.8” (180 x 161 x 70 mm) | 9.3” x 3.5” (236.2 x 88.9 mm) (height x diameter) |
| Drivers | 3” woofer, 2x 2” fullrange tweeters | 2x 55mm fullrange, 2x 25mm tweeters |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | 60Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 20W | - |
| Digital Aux Input | No | No |
| Strap | Yes (built-in strap) | - |
| Wi-Fi | - | Yes |
| Voice Assistants | - | Amazon Alexa |
Related Speaker Comparisons
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Prices on this page were last checked October 12, 2026 at 4:13 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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The Two Speakers In Full
Marshall Stockwell II: $226.00 Amazon $226.00 eBay
Newer model: the Marshall Stockwell III, ranked lower, rated 3/5, released Jun 2026. It adds power bank charging, app control, adjustable EQ and AAC. Water resistance goes from IPX4 to IP55. See every Marshall Portable Speakers generation.
Pros: Marshall Stockwell II uses 3” woofer, 2x 2” fullrange tweeters. Its 1.4 kg, claimed 20 hours (Manufacturer specified) battery life, IPX4 protection, aux input, up to 96dB and mono playback make it a practical option for its intended room or portable use. Possibly the most natural sounding Marshall speaker, with excellent off-axis sound. Measured bass extension of 44Hz (-10dB).
Cons: Bass is limited by its 44Hz specification. There is no companion app. No EQ adjustment. Not very loud, and the added DSP reverb may annoy purists.
Full Marshall Stockwell II review and specifications →
| Released | May 2019 (7 years ago) |
|---|---|
| Amplifier Power | 20W |
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 44Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 50ms |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 7.1” x 6.3” x 2.8” (180 x 161 x 70 mm) |
| Drivers | 3” woofer, 2x 2” fullrange tweeters |
| EQ | No |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX4 |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) |
| Omnidirectional | Yes |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (built-in strap) |
| TWS | No |
| Weight | 3.1 lbs (1.4 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Joy & Oluv’Sone: Marshall Stockwell III vs II - sound test More from Oluv’Sone →
- Oluv Patreon: Marshall Stockwell III vs Stockwell II
- Alan Ross Reviews: Marshall Stockwell 2 Review and huge sound test! - vs JBL Charge 5! 💯 More from alanrossreviews →
- Alan Ross Reviews: Marshall Emberton vs Marshall Stockwell 2 - little guy goes louder?? 🤓
- Alan Ross Reviews: Marshall Stockwell 2 vs Soundcore Motion Boom and Motion Plus! expensive is better?
- Alan Ross Reviews: Marshall Stockwell 2 vs Denon 250bt - little and large? 🙈
- Alan Ross Reviews: Dali Katch G2 high end audio takes on the entire world of bluetooth speakers! 👌👋
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Ultimate Ears Megablast: $240 Discontinued eBay
Pros: Alexa integration (Wi-Fi + Bluetooth). 93dB loudest in UE lineup, 40% louder than Megaboom. IP67 waterproof and drop-proof. 16 hour battery. Party mode connects up to 8 speakers. Can use while charging to keep Alexa on 24/7. Measured bass extension of 64Hz (-10dB).
Cons: Bass is not very deep compared to the competition. Discontinued.
Full Ultimate Ears Megablast review and specifications →
| Released | Oct 2017 (9 years ago) |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 64Hz |
| Battery Life | 16 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 9.3” x 3.5” (236.2 x 88.9 mm) (height x diameter) |
| Drivers | 2x 55mm fullrange, 2x 25mm tweeters |
| EQ | No |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Voice Assistants | Amazon Alexa |
| Weight | 2.4 lbs (1.1 kg) |
| Wi-Fi | Yes |
- Reviews, Comparisons and Sound Samples
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