Short answer: the Sony ULT Tower 7. It ranks #1 of 54 party speakers by sound quality, rated 4.7/5, at $648. The Marshall Bromley 450 ranks #26, rated 3.7/5, at $569.99, $78.01 cheaper, which does not close the gap in sound quality.
The Sony ULT Tower 7 is the better-sounding choice. A big, loud party speaker on wheels with punchy bass, a 30 hour battery, 360 degree sound and inputs for mics and instruments. It supports LDAC Bluetooth, which the Marshall Bromley 450 lacks. The catch: The reviewer notes that Auracast pairing is not backward-compatible with Sony’s older Party Connect speakers, and the hard-plastic corners lack protective rubber bumpers.
The Marshall Bromley 450 is the longer-running, lighter option. A rugged, weather resistant party speaker with drivers on every side, a swappable battery, and mic and guitar inputs. It is rated for 40 hours of battery against 30 for the Sony ULT Tower 7. At 27.1 lbs (12.3 kg) it weighs much less than the Sony ULT Tower 7 at 50.3 lbs (22.8 kg). 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 Sony ULT Tower 7. It is rated higher for sound quality, and saving $78.01 with the Marshall Bromley 450 does not make up for the sound-quality gap.
Want more options? Browse the full Portable Bluetooth rankings.
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Specifications Side By Side
| Sony ULT Tower 7 | Marshall Bromley 450 | |
|---|---|---|
| Price | $648.00 | $569.99 |
| Ranked | #1 of 54 in Party Size Portable Bluetooth Speakers | #26 of 54 in Party Size Portable Bluetooth Speakers |
| App | Yes (Sony Sound Connect) | Yes (Marshall Bluetooth app) |
| Aux Input | RCA input | Yes (3.5mm, RCA) |
| Battery Life | 30 hours (lights off; manufacturer specified) | 40+ hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC, AAC, LC3 |
| Bluetooth Version | 5.3 | 5.3 |
| Built-in Microphone | No | No |
| Digital Aux Input | Yes (USB-C) | Yes (USB-C) |
| Dimensions | 13.7” x 16.6” x 28” (348 x 422 x 711 mm) | 14.4” x 19.4” x 10.3” (366 x 492 x 261 mm) |
| Drivers | 7 drivers: 1x woofer, 2x midrange, 2x front tweeter, 2x rear tweeter | 2x 6.5” woofers, 4x 2” full-range drivers, 2 passive radiators |
| EQ | Yes (10 band; ULT1 / ULT2 / Flat) | Yes |
| Guitar Input | No | Yes |
| IP Rating | IPX4 | IP55 |
| Microphone Input | Yes | Yes (2x XLR/6.35mm combo) |
| Omnidirectional | Yes (360 degree Party Sound) | Yes |
| Amplifier Power | 420W | 400W |
| Party Mode | Yes (Auracast) | Yes (Auracast) |
| Power Bank | Yes (USB charging) | Yes (USB-C) |
| Power Input | AC power cord | USB-C |
| Removable Battery | No | Yes |
| Stereo | Yes | Yes |
| TWS | Yes (Stereo Pair) | No |
| USB Playback | Yes (USB-A) | No |
| Weight | 50.3 lbs (22.8 kg) | 27.1 lbs (12.3 kg) |
| Wi-Fi | No | No |
| Lights | Yes | Yes |
| Wheels | Yes | No |
| Strap | No | No |
| Frequency Response | - | 42Hz - 20kHz (Manufacturer specified) |
| Charging Time | - | 3.5 hours |
| XLR Input | - | Yes (2x combo) |
Where the Ratings Come From
- Sony ULT Tower 7: reviews by New Stuff TV 2, postscript speaker and AudioTribe.
- Marshall Bromley 450: reviews by M1M Tech Channel, Smart Home Sounds and Storytripper HD.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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