Short answer: the Sony SRS-XB43 for balanced warmth, the Middleton II for raw bass depth. The XB43 sounds full and warm with deep, rich bass and twin passive radiators for Extra Bass impact, but it is not as loud as others and will not hold max volume. The Middleton II goes very deep for its size and weight, though its boosted bass drowns the midrange and its response dips around 200Hz, peaks at 1kHz and dips again at 1.6kHz.
Buy the Marshall Middleton II. It is rated higher for sound quality and still sold new, while the Sony SRS-XB43 is discontinued.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Marshall Middleton II | Sony SRS-XB43 | |
|---|---|---|
| Price | $330 | $150 Discontinued |
| Ranked | #31 of 97 in Large Size Portable Bluetooth Speakers | #53 of 97 in Large Size Portable Bluetooth Speakers |
| App | Yes | Yes (Sony Music Center App) |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 38Hz | 53Hz |
| Battery Life | 30 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Built-in Microphone | Yes | Yes |
| EQ | Yes (5 band) | Yes (3 band) |
| IP Rating | IP67 | IP67 |
| Party Mode | Yes (Marshall Stack) | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C) | Yes (USB-A, 5V/1A) |
| Power Input | USB-C | USB-C |
| Weight | 4 lbs (1.8 kg) | 6.5 lbs (2.95 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Bluetooth Version | 5.3 | 5.0 |
| Dimensions | 9.1” x 3.9” x 4.3” (230 x 98 x 110 mm) | 12.8” x 4.8” x 4.6” (325 x 123 x 117 mm) |
| Drivers | 2x 75mm woofers, 2x 0.625” tweeters + 2x passive radiators | 63mm woofer + 12.5mm tweeter + passive radiators |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 80W | 32W RMS |
| Digital Aux Input | No | No |
| Strap | Yes (detachable strap) | - |
| Bluetooth Latency | - | 85ms |
| Maximum SPL | - | 99dB (measured by Alan Ross Reviews) |
| Lights | - | Yes |
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Prices on this page were last checked October 3, 2026 at 10:26 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 (ranked lower, 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 | Yes |
| 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
- Oluv Patreon: Marshall Middleton II - better with EQ? More from Oluv’Sone →
- Oluv Patreon: Marshall Middleton II - first impressions
- Dominik Reviews: Marshall Middleton II vs Middleton I - Huge Differences? - Sound Test More from Dominik Reviews →
- Mateusz Cholewa: Marshall Kilburn 3 vs Marshall Middleton 2 Opinion in Subtitles More from Mateusz Cholewa →
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Sony SRS-XB43: $150 Discontinued eBay
Newer model: the Sony ULT Field 5, ranked higher, rated 3.5/5.
Pros: Full, warm sound with deep, rich bass. Twin passive radiators deliver Extra Bass impact. IPX7 waterproof and rugged. Up to 24 hour battery (14 hours with lights on). Party lights for visual appeal. Measured bass extension of 53Hz (-10dB).
Cons: Not as loud as others in the category. Speaker will not remain at max volume and will turn itself down automatically. Discontinued.
Setup: Try out +3 +6 +3 as an EQ to get it as flat as possible as mentioned in the Alan Ross video
Full Sony SRS-XB43 review and specifications →
| Amplifier Power | 32W RMS |
|---|---|
| App | Yes (Sony Music Center App) |
| Aux Input | Yes |
| Bass Extension (-10dB) | 53Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Latency | 85ms |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 12.8” x 4.8” x 4.6” (325 x 123 x 117 mm) |
| Drivers | 63mm woofer + 12.5mm tweeter + passive radiators |
| EQ | Yes (3 band) |
| IP Rating | IP67 |
| Lights | Yes |
| Maximum SPL | 99dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/1A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 6.5 lbs (2.95 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: JBL Xtreme 3 vs Sony XB43 - boombox champ? More from alanrossreviews →
- Alan Ross Reviews: JBL Charge 5 vs Motion Boom vs Sony XB43 - a step to far? 🤪
- Alan Ross Reviews: Sony xb33 vs xb43 vs Soundcore Motion Plus speakers test
- DLX Willington: Who Sounds The Best Of Sony XG300, XB43 & JBL XTREME3 With Sound Sample BLIND CHALLENGE Reveal. More from DLXWillington →
- Head-to-Head Comparisons