These sit in different size classes, so this is not a straight ranking comparison. The Marshall Middleton II ranks #31 of 97 large speakers by sound quality at $330; the Marshall Bromley 450 ranks #24 of 44 party speakers by sound quality at $649.95.
The Marshall Middleton II is the lighter, tougher pick. Very deep bass for the size/weight. At 4 lbs (1.8 kg) it weighs much less than the Marshall Bromley 450 at 27.1 lbs (12.3 kg). It is rated IP67 against IP55 for the Marshall Bromley 450. The tradeoff: Bass boosted which drowns out the midrange.
The Marshall Bromley 450 is the longer-running choice. A balanced, warm sound with a flat midrange that keeps vocals and instruments clear, plenty of bass rumble and enough treble for energetic vocals, per RTINGS’ lab tests. It is rated for 40 hours of battery against 30 for the Marshall Middleton II. It supports AAC Bluetooth, which the Marshall Middleton II lacks. The catch: It is the quietest of its rivals: both the Soundboks Mix and Teufel Rockster Air 2 play louder, and near max volume the bass recedes and the sound gets less composed.
Buy the Marshall Middleton II ($330) for a large speaker; the Marshall Bromley 450 ($649.95) suits a party speaker instead.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Marshall Middleton II | Marshall Bromley 450 | |
|---|---|---|
| Price | $330 | $649.95 |
| Ranked | #31 of 97 in Large Size Portable Bluetooth Speakers | #24 of 44 in Party Size Portable Bluetooth Speakers |
| App | Yes | Yes (Marshall Bluetooth app) |
| Aux Input | Yes | Yes (3.5mm, RCA) |
| Bass Extension (-10dB) | 38Hz | - |
| Battery Life | 30 hours (Manufacturer specified) | 40+ hours (Manufacturer specified) |
| Built-in Microphone | Yes | No |
| EQ | Yes (5 band) | Yes |
| IP Rating | IP67 | IP55 |
| Party Mode | Yes (Marshall Stack) | Yes (Auracast) |
| Power Bank | Yes (USB-C) | Yes (USB-C) |
| Power Input | USB-C | USB-C |
| Weight | 4 lbs (1.8 kg) | 27.1 lbs (12.3 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC, LC3 |
| Stereo | Yes | Yes |
| Omnidirectional | No | Yes |
| TWS | Yes | No |
| Bluetooth Version | 5.3 | 5.3 |
| Dimensions | 9.1” x 3.9” x 4.3” (230 x 98 x 110 mm) | 14.4” x 19.4” x 10.3” (366 x 492 x 261 mm) |
| Drivers | 2x 75mm woofers, 2x 0.625” tweeters + 2x passive radiators | 2x 6.5” woofers, 4x 2” full-range drivers, 2 passive radiators |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) | 42Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 80W | 400W |
| Digital Aux Input | No | Yes (USB-C) |
| Strap | Yes (detachable strap) | No |
| Charging Time | - | 3.5 hours |
| Removable Battery | - | Yes |
| Microphone Input | - | Yes (2x XLR/6.35mm combo) |
| XLR Input | - | Yes (2x combo) |
| Guitar Input | - | Yes |
| USB Playback | - | No |
| Wi-Fi | - | No |
| Lights | - | Yes |
| Wheels | - | No |
Related Speaker Comparisons
More worthwhile head-to-heads for Marshall Middleton II:
- 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 October 2, 2026 at 10:18 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 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
- Head-to-Head Comparisons
- Marshall Middleton II vs Sonos Move
- Marshall Middleton II vs Mee audio PartySPKR
- 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 onn Portable FM Boombox
- See all 77 comparisons
Marshall Bromley 450: $649.95 Amazon B&H Photo Video eBay
Pros: A balanced, warm sound with a flat midrange that keeps vocals and instruments clear, plenty of bass rumble and enough treble for energetic vocals, per RTINGS’ lab tests. Drivers on all four sides keep the tonal balance nearly the same from any angle, and M1M Tech Channel found it more open and airy than the Soundboks Mix and Teufel Rockster Air 2, with deeper bass than both. RTINGS measured 18.8 hours of battery from a swappable LiFePO4 pack shared with the Bromley 750, and it adds IP55 protection, two XLR/6.35mm combo inputs, USB-C audio, Auracast and physical bass and treble knobs.
Cons: It is the quietest of its rivals: both the Soundboks Mix and Teufel Rockster Air 2 play louder, and near max volume the bass recedes and the sound gets less composed. The warm tuning lacks some fine treble detail. There is no graphic EQ, only bass and treble knobs, and its stereo spreads left and right channels around the cabinet, so panned elements can land on the wrong side. At 12.3 kg it has a carry handle but no wheels.
Full Marshall Bromley 450 review and specifications →
| Amplifier Power | 400W |
|---|---|
| App | Yes (Marshall Bluetooth app) |
| Aux Input | Yes (3.5mm, RCA) |
| Battery Life | 40+ hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LC3 |
| Bluetooth Version | 5.3 |
| Built-in Microphone | No |
| Charging Time | 3.5 hours |
| Digital Aux Input | Yes (USB-C) |
| Dimensions | 14.4” x 19.4” x 10.3” (366 x 492 x 261 mm) |
| Drivers | 2x 6.5” woofers, 4x 2” full-range drivers, 2 passive radiators |
| EQ | Yes |
| Frequency Response | 42Hz - 20kHz (Manufacturer specified) |
| Guitar Input | Yes |
| IP Rating | IP55 |
| Lights | Yes |
| Microphone Input | Yes (2x XLR/6.35mm combo) |
| Omnidirectional | Yes |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Removable Battery | Yes |
| Stereo | Yes |
| Strap | No |
| TWS | No |
| USB Playback | No |
| Weight | 27.1 lbs (12.3 kg) |
| Wheels | No |
| Wi-Fi | No |
| XLR Input | Yes (2x combo) |
- Links
- Reviews, Comparisons and Sound Samples
- RTINGS: Marshall Bromley 450 Review More from Rtings.com →
- M1M Tech Channel: The best in its class? Marshall Bromley 450 vs. Soundboks & Teufel More from M1MTechChannel →
- HeadphoneCheck: Marshall Bromley 450 test
- Tom’s Guide: Marshall Bromley 450 vs Bromley 750 face-off
- Smart Home Sounds: Marshall Bromley 450 review More from Smart Home Sounds →
- Storytripper HD: JBL Partybox 120 vs Marshall Bromley 450 (Indoor) More from storytripperhd →
- Storytripper HD: Marshall Bromley 450 vs Marshall Bromley 750 (outdoor)
- Storytripper HD: Marshall Woburn III vs Marshall Bromley 450
- Head-to-Head Comparisons
- Marshall Bromley 450 vs Soundboks Mix
- Marshall Bromley 450 vs Onn Large Party gen 2
- Marshall Bromley 450 vs Onn Large Party gen 1
- Marshall Bromley 450 vs Onn XL Wireless Party Speaker
- Marshall Bromley 450 vs JBL Partybox 110
- Marshall Bromley 450 vs JBL Partybox 130
- Marshall Bromley 450 vs JBL Partybox Club 120
- Marshall Bromley 450 vs Sony ULT Tower 5
- See all 20 comparisons