Short answer: the Marshall Middleton II if sound quality matters most, the Ultimate Ears Megablast if price matters most. The Marshall Middleton II ranks #28 of 77 large speakers at $330. The Ultimate Ears Megablast ranks #61 at $240, $90 cheaper.
What the Marshall Middleton II offers: Very deep bass for the size/weight. Watch for: Bass boosted which drowns out the midrange. Dip around 200hz, peak at 1khz, dipped at 1.6khz. Strange frequency response through the mids.
What the Ultimate Ears Megablast offers: 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. Watch for: Bass is not very deep compared to the competition
Buy the Marshall Middleton II when sound quality outweighs the price for you, and the Ultimate Ears Megablast when the price outweighs sound quality instead.
Skip the Ultimate Ears Megablast if sound quality matters to you. It ranks near the bottom of the 77 large speakers.
There is a real battery-life gap here: the Marshall Middleton II is rated for 30 hours, the Ultimate Ears Megablast only 16 hours.
Specifications Side By Side
| Marshall Middleton II | Ultimate Ears Megablast | |
|---|---|---|
| Price | $330 | $240 Discontinued |
| Ranked | #28 of 77 in Large Size Portable Bluetooth Speakers | #61 of 77 in Large Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 38Hz | 64Hz |
| Battery Life | 30 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| Built in Microphone | Yes | Yes |
| EQ | Yes (5 band) | No |
| IP Rating | IP67 | IPX7 |
| Party Mode | Yes (Marshall Stack) | No |
| Power Bank | Yes (USB-C) | No |
| Power Input | USB-C | USB-C |
| Weight | 4 lbs / 1.8 kg | 2.4 lbs / 1.1 kg |
| Bluetooth Codecs | SBC | SBC |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Bluetooth Version | 5.3 | 4.2 |
| Dimensions | 9.1" x 3.9" x 4.3" (230 x 98 x 110 mm) | 9.3" x 3.5" (236.2 x 88.9 mm) (height x diameter) |
| Drivers | 2x 75mm woofers, 2x 0.625" tweeters + 2x passive radiators | 2x 55mm fullrange, 2x 25mm tweeters |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) | 60Hz - 20kHz (Manufacturer specified) |
| Output Power | 80W | Specs not published by manufacturer |
| Digital Aux Input | No | No |
| Discontinued | - | Yes |
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Prices on this page were last checked August 27, 2026 at 10:09 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 Middleton II: $330 Amazon eBay
Pros: Very deep bass for the size/weight.
Cons: Bass boosted which drowns out the midrange. Dip around 200hz, peak at 1khz, dipped at 1.6khz. Strange frequency response through the mids.
Full Marshall Middleton II review and specifications →
| App | Yes |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 38Hz |
| Battery Life | 30 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 9.1" x 3.9" x 4.3" (230 x 98 x 110 mm) |
| Drivers | 2x 75mm woofers, 2x 0.625" tweeters + 2x passive radiators |
| EQ | Yes (5 band) |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP67 |
| Omnidirectional | No |
| Output Power | 80W |
| Party Mode | Yes (Marshall Stack) |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 4 lbs / 1.8 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Marshall Middleton II vs Sonos Move
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Ultimate Ears Megablast: $240 Discontinued Ultimate Ears Megablast 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.
Cons: Bass is not very deep compared to the competition. Discontinued.
Full Ultimate Ears Megablast review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 64Hz |
| Battery Life | 16 hours (Manufacturer specified) |
| 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) |
| Discontinued | Yes |
| Drivers | 2x 55mm fullrange, 2x 25mm tweeters |
| EQ | No |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Output Power | Specs not published by manufacturer |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 2.4 lbs / 1.1 kg |
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