These sit in different size classes, so this is not a straight ranking comparison. The Marshall Middleton ranks #34 of 82 large speakers by sound quality at $210.69; the Sony ULT Field 3 ranks #61 of 144 medium speakers by sound quality at $138.
Why pick the Marshall Middleton: Very deep bass for the size/weight. The tradeoff: 5db dip at 1.7kHz and 6.3kHz.
The case for the Sony ULT Field 3: IP67 rated, dustproof and water resistant. The catch: Sounds a bit hollow, a bit boosted in the treble.
Buy the Marshall Middleton at $210.69 for a large speaker, or the Sony ULT Field 3 at $138 for a medium speaker instead.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Marshall Middleton | Sony ULT Field 3 | |
|---|---|---|
| Price | $210.69 | $138.00 |
| Ranked | #34 of 82 in Large Size Portable Bluetooth Speakers | #61 of 144 in Medium Size Portable Bluetooth Speakers |
| Aux Input | Yes | No |
| Bass Extension (-10dB) | 39Hz | - |
| Battery Life | 20 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Maximum SPL | 99dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Marshall Stack) | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C) | Yes (USB-C, 5V/1.5A) |
| Weight | 4 lbs (1.8 kg) | 2.6 lbs (1.2 kg) |
| App | No | Yes |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| Built-in Microphone | Yes | Yes |
| EQ | No | Yes (App + ULT button) |
| IP Rating | IPX7 | IP67 |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Bluetooth Version | 5.1 | 5.2 |
| Dimensions | 9.1” x 3.7” x 4.3” (230 x 95 x 109 mm) | 10.1” x 4.4” x 3.1” (256 x 113 x 79 mm) |
| Drivers | 2x 75mm woofers, 2x 0.625” tweeters + 2x passive radiators | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 50W | 27W |
| Digital Aux Input | No | No |
| Strap | Yes (detachable strap) | Yes (detachable shoulder strap) |
Related Speaker Comparisons
More top alternatives to Marshall Middleton:
- Marshall Middleton vs Vifa Helsinki
- JBL Xtreme 5 vs Marshall Middleton
- Tribit Stormbox Lava vs Marshall Middleton
- Marshall Middleton vs Brane X
- Minirig 4 with subwoofer vs Marshall Middleton
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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
Marshall Middleton: $210.69 Amazon eBay
Newer model: the Marshall Middleton II, rated 4.1/5.
Pros: Very deep bass for the size/weight. Measured bass extension of 39Hz (-10dB).
Cons: 5db dip at 1.7kHz and 6.3kHz. 9kHz treble peak. Not a very smooth frequency response. A lot of Marshall’s added dsp echo which cannot be turned off, very distracting and annoying. It’s like forcing you to listen to your music in an echo chamber. Bass is reasonably deep but artificial sounding and flabby, with no attack and no dynamics. Treble is rolled off.
Full Marshall Middleton review and specifications →
| Amplifier Power | 50W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 39Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.1 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 9.1” x 3.7” x 4.3” (230 x 95 x 109 mm) |
| Drivers | 2x 75mm woofers, 2x 0.625” tweeters + 2x passive radiators |
| EQ | No |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Maximum SPL | 99dB (measured by Alan Ross Reviews) |
| 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
- Alan Ross Reviews: 3 minutes ago….. Marshall Middleton Review, true stereophonic, no honestly 😊 More from alanrossreviews →
- Mateusz Cholewa: BOGASING S8 Pro MAX HiFi ?🆚 MARSHALL🎸MIDDELTON More from Mateusz Cholewa →
- Mateusz Cholewa: Marshall Middleton👌🎶 🆚 JBL Xtreme 4 🎶📢
- Oluv Patreon: Marshall Middleton - first impressions More from Oluv’Sone →
- Danny Pops: Is it Any Good? - Marshall Middleton Review More from DannyPops →
- Smart Home Sounds: Best Premium Bluetooth Speakers: Sonos Move, JBL Xtreme 3, Marshall Middleton & More… More from Smart Home Sounds →
- Storytripper HD: Marshall Middleton vs Klipsch Detroit More from storytripperhd →
- Jay’s Straight Up Reviews & More: Bass Check 💣 Treblab HD-360, Ultimate Ears EpicBoom, Marshall Middleton & JBL Pulse 5. Boom or Bust? More from JaysStraightUpReviews →
- Head-to-Head Comparisons
- Marshall Middleton vs Ultimate Ears Everboom
- Marshall Middleton vs LG Xboom Bounce
- Marshall Middleton vs Mee audio PartySPKR
- Marshall Middleton vs Marshall Middleton II
- Marshall Middleton vs Sonos Move
- Marshall Middleton vs Marshall Kilburn II
- Marshall Middleton vs JBL Xtreme 4
- Marshall Middleton vs Sonos Move 2
- See all 72 comparisons
Sony ULT Field 3: $138.00 Amazon eBay
Older models: the Sony XB33 (rated 3.4/5), the Sony SRS-XE300 (rated 2.8/5) and the Sony SRS-XB30 (rated 2.6/5).
Pros: IP67 rated, dustproof and water resistant. 24 hour battery life. App with 10-band EQ. Party Connect with up to 100 speakers. USB-C in/out for charging your phone.
Cons: Sounds a bit hollow, a bit boosted in the treble. Custom EQ and the ULT bass-boost button can’t be used together - turning on ULT disables the EQ. Bass is very weak with ULT off. Lost to the JBL Charge 6 in a side-by-side comparison despite being the larger speaker.
Full Sony ULT Field 3 review and specifications →
| Amplifier Power | 27W |
|---|---|
| App | Yes |
| Aux Input | No |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 10.1” x 4.4” x 3.1” (256 x 113 x 79 mm) |
| Drivers | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| EQ | Yes (App + ULT button) |
| IP Rating | IP67 |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C, 5V/1.5A) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| Weight | 2.6 lbs (1.2 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Sony ULT Field 3 vs Bose Soundlink Mini
- Sony ULT Field 3 vs Xiaomi Mi Portable
- Sony ULT Field 3 vs Sony XB33
- Sony ULT Field 3 vs Bose Soundlink Mini 2
- Sony ULT Field 3 vs Soundcore 3/Soundcore Select 2
- Sony ULT Field 3 vs Turtlebox Ranger
- Sony ULT Field 3 vs Beats Pill 2024
- Sony ULT Field 3 vs JBL Flip 5
- See all 118 comparisons