Short answer: the Sony ULT Field 7. It ranks #61 of 113 boombox speakers by sound quality, rated 3.2/5, at $448. The Monster Rockin’ Roller 270 ranks #104, rated 2.1/5, at $208.99, $239.01 cheaper, a saving that is not big enough to make up the sound-quality gap.
The Sony ULT Field 7 is the better-sounding, lighter choice. A waterproof stereo party speaker with a 30 hour battery and karaoke mic and guitar inputs. At 13.9 lbs (6.3 kg) it weighs much less than the Monster Rockin’ Roller 270 at 28.7 lbs (13 kg). It is rated IP67 against IPX4 for the Monster Rockin’ Roller 270. It supports LDAC Bluetooth, which the Monster Rockin’ Roller 270 lacks. The tradeoff: A peak around 8kHz, and bass does not reach as deep as the top-ranked speakers.
The Monster Rockin’ Roller 270 is the longer-running option. A wheeled party speaker with an enormous battery, sound spread wide around it and a wireless phone charging pad. It is rated for 100 hours of battery against 30 for the Sony ULT Field 7. The tradeoff: Bass not as deep as competitors, less neutral than ION speakers.
Buy the Sony ULT Field 7. It is rated higher for sound quality, and saving $239.01 with the Monster Rockin’ Roller 270 does not make up for the sound-quality gap.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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Specifications Side By Side
| Sony ULT Field 7 | Monster Rockin’ Roller 270 | |
|---|---|---|
| Price | $448.00 | $208.99 |
| Ranked | #61 of 113 in Boombox Size Portable Bluetooth Speakers | #104 of 113 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | ~52Hz | 53Hz |
| Battery Life | 30 hours (Manufacturer specified) | 100 hours (Manufacturer specified) |
| Guitar Input | Yes | - |
| IP Rating | IP67 | IPX4 |
| Microphone Input | Yes (Karaoke mode with echo effect) | - |
| Party Mode | Yes (Party Connect up to 100 speakers) | No |
| Power Bank | Yes (USB-A, 5V/1.5A) | Yes (USB-A, 5V/2.1A) |
| Power Input | AC Power cord | USB-C |
| Stereo | Yes | No |
| Omnidirectional | No | No |
| USB Playback | Yes | No |
| Weight | 13.9 lbs (6.3 kg) | 28.7 lbs (13 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC |
| App | No | Yes (Monster Zone Control app) |
| EQ | Yes (App + ULT button) | Yes |
| TWS | Yes | Yes |
| Built-in Microphone | Yes | No |
| Bluetooth Version | 5.2 | 5.0 |
| Dimensions | 20.2” x 8.8” x 8.7” (512 x 224 x 222 mm) | 15” x 18.6” x 10.9” (381 x 472 x 276 mm) |
| Amplifier Power | 100W | 200W |
| Drivers | 2x 114mm x 114mm X-Balanced woofers + 2x 46mm (1.9”) tweeters | 2x 3” (76mm) woofers + 2x tweeters (size undisclosed) |
| Digital Aux Input | No | No |
| Strap | No | No |
| FM Tuner | - | Yes |
| Maximum SPL | - | 96dB (Manufacturer specified) |
| Wheels | - | Yes |
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