These sit in different size classes, so this is not a straight ranking comparison. The Marshall Bromley 450 ranks #26 of 53 party speakers by sound quality at $569.99; the Marshall Bromley 750 ranks #13 of 13 large party speakers by sound quality at $999.99.
RTINGS found the two perform similarly in the lab. Both use drivers on every side so the sound stays nearly the same from any angle, and both share the same swappable LiFePO4 battery. The Marshall Bromley 450 comes across as the more balanced of the two, with a flatter midrange, where the Marshall Bromley 750 has some midrange peaks and an overdone default bass setting.
The Bromley 750 is the one for scale. It plays quite a bit louder in its Loud mode, reaches deeper into the low bass with two 10 inch woofers, and has up-firing drivers. It also weighs about twice as much at 52.7 lbs (23.9 kg), which is why it rolls on wheels with a telescoping handle.
The Bromley 450 is 27.1 lbs (12.3 kg) with a side carry handle and a slightly better IP55 rating against the 750’s IP54. Both have two XLR/6.35mm combo inputs, USB-C audio, Auracast and physical bass and treble knobs.
Buy the Marshall Bromley 450 ($569.99) for a party speaker; the Marshall Bromley 750 ($999.99) suits a large party speaker instead.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Prices on this page were last checked November 11, 2026 at 3:26 AM 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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Specifications Side By Side
| Marshall Bromley 450 | Marshall Bromley 750 | |
|---|---|---|
| Price | $569.99 | $999.99 |
| Ranked | #26 of 53 in Party Size Portable Bluetooth Speakers | #13 of 13 in Large Party Size Portable Bluetooth Speakers |
| Amplifier Power | 400W | 400W |
| Drivers | 2x 6.5” woofers, 4x 2” full-range drivers, 2 passive radiators | 2x 10” woofers, 2x 5.25” mid-ranges, 2x 1” tweeters, 2x 0.8” tweeters |
| Frequency Response | 42Hz - 20kHz (Manufacturer specified) | 20Hz - 20kHz (Manufacturer specified) |
| Battery Life | 40+ hours (Manufacturer specified) | 40+ hours (Manufacturer specified) |
| Charging Time | 3.5 hours | 3.5 hours |
| Removable Battery | Yes | Yes |
| IP Rating | IP55 | IP54 |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.3 |
| Bluetooth Codecs | SBC, AAC, LC3 | SBC, AAC, LC3 |
| Aux Input | Yes (3.5mm, RCA) | Yes (3.5mm, RCA) |
| Digital Aux Input | Yes (USB-C) | Yes (USB-C) |
| Microphone Input | Yes (2x XLR/6.35mm combo) | Yes (2x XLR/6.35mm combo) |
| XLR Input | Yes (2x combo) | Yes (2x combo) |
| Guitar Input | Yes | Yes |
| Power Bank | Yes (USB-C) | Yes (USB-C) |
| Power Input | USB-C | USB-C |
| App | Yes (Marshall Bluetooth app) | Yes (Marshall Bluetooth app) |
| EQ | Yes | Yes |
| Party Mode | Yes (Auracast) | Yes (Auracast) |
| Built-in Microphone | No | No |
| USB Playback | No | No |
| Wi-Fi | No | No |
| TWS | No | No |
| Lights | Yes | Yes |
| Weight | 27.1 lbs (12.3 kg) | 52.7 lbs (23.9 kg) |
| Dimensions | 14.4” x 19.4” x 10.3” (366 x 492 x 261 mm) | 16.3” x 25.7” x 14” (413 x 652 x 355 mm) |
| Stereo | Yes | Yes |
| Omnidirectional | Yes | Yes |
| Strap | No | No |
| Wheels | No | - |
Watch Them Compared
Videos and reviews that test both speakers side by side.
- Storytripper HD: Marshall Bromley 450 vs Marshall Bromley 750 (outdoor)
- Tom’s Guide: Marshall Bromley 450 vs Bromley 750 face-off
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