These are not really the same size class, and that is the honest framing here. The Marshall Middleton II ranks #31 of 82 large speakers by sound quality at $330; the Turtlebox Gen 3 ranks #71 of 76 boombox speakers by sound quality at $430.
Why pick the Marshall Middleton II: Very deep bass for the size/weight. Watch for: Bass boosted which drowns out the midrange.
Why pick the Turtlebox Gen 3: Waterproof and crushproof, loud with punchy bass. Watch for: Sounds basically identical to the original and the Gen 2: each generation mainly added features, not sound quality.
Buy the Marshall Middleton II ($330) for a large speaker; the Turtlebox Gen 3 ($430) suits a boombox speaker instead.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Marshall Middleton II | Turtlebox Gen 3 | |
|---|---|---|
| Price | $330 | $430.00 |
| Ranked | #31 of 82 in Large Size Portable Bluetooth Speakers | #71 of 76 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 38Hz | ~65Hz |
| Battery Life | 30 hours (Manufacturer specified) | 25 hours (Manufacturer specified) |
| Built-in Microphone | Yes | No |
| EQ | Yes (5 band) | No |
| IP Rating | IP67 | IP67 |
| Party Mode | Yes (Marshall Stack) | Yes (Turtlebox Party Mode) |
| Power Bank | Yes (USB-C) | Yes (USB-C) |
| Power Input | USB-C | USB-C |
| Weight | 4 lbs (1.8 kg) | 10 lbs (4.54 kg) |
| Bluetooth Codecs | SBC | SBC |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Bluetooth Version | 5.3 | 5.4 |
| Dimensions | 9.1” x 3.9” x 4.3” (230 x 98 x 110 mm) | 12” x 7” x 8.7” (305 x 178 x 222 mm) |
| Drivers | 2x 75mm woofers, 2x 0.625” tweeters + 2x passive radiators | 1x 6x9” (152x228mm) woofer + 1x 1” (25mm) tweeter |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 80W | 50W |
| Digital Aux Input | No | No |
| Strap | Yes (detachable strap) | No |
| MicroSD Playback | - | Yes |
| USB Playback | - | No |
Related Speaker Comparisons
How Marshall Middleton II compares with other leading options:
- Marshall Middleton II vs Vifa Helsinki
- JBL Xtreme 5 vs Marshall Middleton II
- Tribit Stormbox Lava vs Marshall Middleton II
- Marshall Middleton II vs Brane X
- Marshall Middleton II vs Minirig 4 with subwoofer
Prices on this page were last checked September 26, 2026 at 11:14 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
Older model: the Marshall Middleton (rated 4/5).
Pros: Very deep bass for the size/weight. Measured bass extension of 38Hz (-10dB).
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 →
| Amplifier Power | 80W |
|---|---|
| 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 |
| Party Mode | Yes (Marshall Stack) |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (detachable strap) |
| 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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- Marshall Middleton II vs Marshall Middleton
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- See all 71 comparisons
Turtlebox Gen 3: $430.00 Amazon eBay
Older models: the Turtlebox Gen 2 (rated 2.1/5) and the Turtlebox (rated 2.1/5).
Pros: Waterproof and crushproof, loud with punchy bass. 25+ hour battery life. USB-C charging and USB-C output charges other devices. True multi-speaker Party Mode added on top of stereo pairing, plus Bluetooth 5.4. Measured bass extension of ~65Hz (-10dB).
Cons: Sounds basically identical to the original and the Gen 2: each generation mainly added features, not sound quality. They pretty much lie about all their specs and sound horrible in all youtube sound samples. Will never hit its claimed 120db at a reasonable measuring distance. Putting your db meter right against the speaker doesn’t count, 1 meter distance is the standard. Barely any bass. Rattles at high volume. Looking at it, it appears to be a generic car 2-way 6x9 speaker in a plastic box.
Full Turtlebox Gen 3 review and specifications →
| Amplifier Power | 50W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~65Hz |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.4 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 12” x 7” x 8.7” (305 x 178 x 222 mm) |
| Drivers | 1x 6x9” (152x228mm) woofer + 1x 1” (25mm) tweeter |
| EQ | No |
| IP Rating | IP67 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Party Mode | Yes (Turtlebox Party Mode) |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| USB Playback | No |
| Weight | 10 lbs (4.54 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Turtlebox Gen 3 vs Turtlebox Gen 2
- Turtlebox Gen 3 vs Monster Rockin’ Roller 270
- Turtlebox Gen 3 vs Turtlebox
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- See all 81 comparisons