Short answer: the Xdobo Wow Max. It ranks #21 of 113 boombox speakers by sound quality, rated 3.9/5, at $206.09; the Sony ULT Field 7 ranks #61, rated 3.2/5, and costs $448, so there is not much of a tradeoff to weigh.
The Wow Max won the side by side test. Both are clear, but the ULT Field 7 loses bass at higher volume and falls apart past about 60%, while the Wow Max kept its bass and control up to max.
The ULT Field 7 is tougher, IP67 with a claimed 30 hours, and weighs 13.9 lbs (6.3 kg). The Wow Max claims 8 hours and includes two wireless microphones.
Evidence: the Wow Max’s rating comes from listening comparisons, not measurements.
Buy the Xdobo Wow Max. It is rated higher for sound quality than the Sony ULT Field 7 and costs less, which makes it the one to get unless you need something the other one does better.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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
| Xdobo Wow Max | Sony ULT Field 7 | |
|---|---|---|
| Price | $206.09 | $448.00 |
| Ranked | #21 of 113 in Boombox Size Portable Bluetooth Speakers | #61 of 113 in Boombox Size Portable Bluetooth Speakers |
| Amplifier Power | 300W | 100W |
| Drivers | 8 drivers | 2x 114mm x 114mm X-Balanced woofers + 2x 46mm (1.9”) tweeters |
| Frequency Response | 32Hz - 20kHz (Manufacturer specified) | - |
| Battery Life | 8 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| Power Input | USB-C (5V-20V) | AC Power cord |
| Weight | 15.4 lbs (7 kg) | 13.9 lbs (6.3 kg) |
| Dimensions | 21.7” x 9.4” x 11.8” (550 x 240 x 300 mm) | 20.2” x 8.8” x 8.7” (512 x 224 x 222 mm) |
| Wireless Microphones | Yes 2 Included | - |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Bluetooth | Yes | Yes |
| Aux Input | - | Yes |
| Bass Extension (-10dB) | - | ~52Hz |
| Guitar Input | - | Yes |
| IP Rating | - | IP67 |
| Microphone Input | - | Yes (Karaoke mode with echo effect) |
| Party Mode | - | Yes (Party Connect up to 100 speakers) |
| Power Bank | - | Yes (USB-A, 5V/1.5A) |
| USB Playback | - | Yes |
| Bluetooth Codecs | - | SBC, AAC, LDAC |
| App | - | No |
| EQ | - | Yes (App + ULT button) |
| TWS | - | Yes |
| Built-in Microphone | - | Yes |
| Bluetooth Version | - | 5.2 |
| Digital Aux Input | - | No |
| Strap | - | No |
Watch Them Compared
Videos and reviews that test both speakers side by side.
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