Short answer: it depends on whether you need a battery. The Sony ULT Tower Max runs only on mains power, while the Marshall Bromley 750 has a battery rated for 40 hours. The Sony ULT Tower Max ranks higher on sound quality (#1 vs #13 of 13 large party speakers, 4.8/5 vs 3.6/5). Get the Sony ULT Tower Max if it will always be plugged in, or the Marshall Bromley 750 if you want to play away from an outlet.
The Sony ULT Tower Max is the better-sounding option. A very loud party speaker, with three big woofers for huge bass at large events. It supports LDAC Bluetooth, which the Marshall Bromley 750 lacks. The catch: The same comparison found it 1.2dB behind the JBL in A-weighted loudness and weaker below 40Hz.
The Marshall Bromley 750 is the battery-powered, lighter option. A stylish battery party speaker that spreads sound evenly in every direction, with a very long rated battery. Its battery is rated for 40 hours, while the Sony ULT Tower Max needs an outlet. At 52.7 lbs (23.9 kg) it weighs much less than the Sony ULT Tower Max at 124.1 lbs (56.3 kg). The catch: Not as deep bass as the JBL Partybox 330 or JBL Partybox 720.
Buy the Marshall Bromley 750 if you need to play away from an outlet. Buy the Sony ULT Tower Max if it will always be plugged in.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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Specifications Side By Side
| Sony ULT Tower Max | Marshall Bromley 750 | |
|---|---|---|
| Price | $1,498.00 | $999.99 |
| Ranked | #1 of 13 in Large Party Size Portable Bluetooth Speakers | #13 of 13 in Large Party Size Portable Bluetooth Speakers |
| App | Yes (Sony Sound Connect) | Yes (Marshall Bluetooth app) |
| Aux Input | RCA input | Yes (3.5mm, RCA) |
| Battery Life | No Battery | 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 | No | Yes (USB-C) |
| Dimensions | 21” x 41.8” x 18.6” (534 x 1062 x 472 mm) | 16.3” x 25.7” x 14” (413 x 652 x 355 mm) |
| Drivers | 9 drivers: 3x 11” woofer (2 front, 1 rear), 2x 4.7” midrange, 2x 1” tweeter, 2x 1.6” rear tweeter | 2x 10” woofers, 2x 5.25” mid-ranges, 2x 1” tweeters, 2x 0.8” tweeters |
| EQ | Yes (10 band; ULT1 / ULT2 / Flat / Live) | Yes |
| Guitar Input | No | Yes |
| IP Rating | Splashproof top surface | IP54 |
| Microphone Input | Yes (6.3mm) | Yes (2x XLR/6.35mm combo) |
| Omnidirectional | Yes (360 degree Party Sound) | Yes |
| Amplifier Power | 2,150W (manufacturer specified) | 400W |
| Party Mode | Yes (Party Chain) | Yes (Auracast) |
| Power Bank | Yes (USB charging) | Yes (USB-C) |
| Power Input | AC 120-240V, 50/60Hz | USB-C |
| Removable Battery | No | Yes |
| Stereo | Yes | Yes |
| TWS | Yes (Stereo Pair) | No |
| USB Playback | Yes (USB-A) | No |
| Weight | 124.1 lbs (56.3 kg) | 52.7 lbs (23.9 kg) |
| Wi-Fi | No | No |
| Lights | Yes | Yes |
| Wheels | Yes | - |
| Strap | No | No |
| XLR Input | - | Yes (2x combo) |
| Charging Time | - | 3.5 hours |
| Frequency Response | - | 20Hz - 20kHz (Manufacturer specified) |
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