Short answer: the Marshall Middleton II for better sound quality, the Zealot S67 for the lower price. The Marshall Middleton II ranks #28 of 77 large speakers at $330. The Zealot S67 ranks #76 at $80, $250 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 Zealot S67 offers: 60W output power, 20-hour battery life, IPX6 waterproof, Bluetooth 5.2, TWS stereo pairing, EQ with 3 sound modes, dual drivers with passive radiator, MicroSD and AUX support, built-in microphone, USB-C charging Watch for: A lot of distortion above 50%, no deep bass, rolled off treble. Just not a good sounding speaker.
Buy the Marshall Middleton II when sound quality outweighs the price for you, and the Zealot S67 when the price outweighs sound quality instead.
Skip the Zealot S67 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 Zealot S67 only 20 hours.
Specifications Side By Side
| Marshall Middleton II | Zealot S67 | |
|---|---|---|
| Price | $330 | $80 |
| Ranked | #28 of 77 in Large Size Portable Bluetooth Speakers | #76 of 77 in Large Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 38Hz | - |
| Battery Life | 30 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| Built in Microphone | Yes | Yes |
| EQ | Yes (5 band) | No |
| IP Rating | IP67 | IPX6 |
| Party Mode | Yes (Marshall Stack) | No |
| Power Bank | Yes (USB-C) | No |
| Power Input | USB-C | USB-C |
| Weight | 4 lbs / 1.8 kg | 5.3 lbs / 2.4 kg |
| Bluetooth Codecs | SBC | SBC |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Bluetooth Version | 5.3 | 5.2 |
| Dimensions | 9.1" x 3.9" x 4.3" (230 x 98 x 110 mm) | 11.6" x 4.8" x 5.2" (294 x 122 x 132 mm) |
| Drivers | 2x 75mm woofers, 2x 0.625" tweeters + 2x passive radiators | 60W: Dual drivers + passive radiator |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) | - |
| Output Power | 80W | 60W |
| Digital Aux Input | No | No |
| MicroSD Playback | - | 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
- Marshall Middleton II vs LG Xboom Bounce
- Marshall Middleton II vs Sonos Move 2
- Marshall Middleton II vs Marshall Middleton
- Marshall Middleton II vs Ultimate Ears Everboom
- Marshall Middleton II vs Soundcore Motion X500
- Marshall Middleton II vs Bose SoundLink Plus
- Marshall Middleton II vs Teufel Rockster Cross
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Zealot S67: $80 Amazon Aliexpress eBay
Pros: 60W output power, 20-hour battery life, IPX6 waterproof, Bluetooth 5.2, TWS stereo pairing, EQ with 3 sound modes, dual drivers with passive radiator, MicroSD and AUX support, built-in microphone, USB-C charging
Cons: A lot of distortion above 50%, no deep bass, rolled off treble. Just not a good sounding speaker.
Full Zealot S67 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.2 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 11.6" x 4.8" x 5.2" (294 x 122 x 132 mm) |
| Drivers | 60W: Dual drivers + passive radiator |
| EQ | No |
| IP Rating | IPX6 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Output Power | 60W |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 5.3 lbs / 2.4 kg |
- Links
- Reviews, Comparisons and Sound Samples
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