Short answer: the XDOBO Wow Max. It ranks #21 of 85 boombox speakers by sound quality, rated 3.9/5, at $206.09; the Sony ULT Field 7 ranks #52, rated 3.2/5, and costs $400, 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 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.
Specifications Side By Side
| XDOBO Wow Max | Sony ULT Field 7 | |
|---|---|---|
| Price | $206.09 | $400 |
| Ranked | #21 of 85 in Boombox Size Portable Bluetooth Speakers | #52 of 85 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 |
| 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 |
Related Speaker Comparisons
How XDOBO Wow Max compares with other leading options:
- Zealot ZE21 vs XDOBO Wow Max
- JBL Boombox 4 vs XDOBO Wow Max
- XDOBO Wow Max vs W-King X20
- XDOBO Wow Max vs Hopestar A65
- Sony ULT Field 7 vs Yeahbox Sonic Boom Max 3
Prices on this page were last checked September 26, 2026 at 11:14 PM 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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The Two Speakers In Full
XDOBO Wow Max: $206.09 Amazon eBay
Pros: Big, loud and bass-heavy, with an eight-driver, 300W layout and bass rated down to 32Hz. In side by side tests it sounded better balanced and clearer than the Zealot ZE21, with smooth mids and punchy yet deep bass, handled high volume better than the JBL Boombox 4, which gets screechy and drops bass at max, and clearly beat the Sony ULT Field 7 and W-King X20. Two wireless microphones are included, and it charges over USB-C at up to 20V.
Cons: At low and mid volume the JBL Boombox 4 sounds better in the mids and highs; the Wow Max comes across slightly muted and bass forward there, with its midrange not aimed at ear level. The evidence is listening comparisons rather than measurements. About 7 kg, and only a claimed 8 hours of battery.
Full XDOBO Wow Max review and specifications →
| Amplifier Power | 300W |
|---|---|
| Battery Life | 8 hours (Manufacturer specified) |
| Dimensions | 21.7” x 9.4” x 11.8” (550 x 240 x 300 mm) |
| Drivers | 8 drivers |
| Frequency Response | 32Hz - 20kHz (Manufacturer specified) |
| Omnidirectional | No |
| Power Input | USB-C (5V-20V) |
| Stereo | Yes |
| Weight | 15.4 lbs (7 kg) |
| Wireless Microphones | Yes 2 Included |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Sony ULT Field 7: $400 Amazon eBay
Older model: the Sony SRS-XG500 (ranked lower, rated 3/5).
Pros: Sony ULT Field 7 uses 2x 114mm x 114mm X-Balanced woofers + 2x 46mm (1.9”) tweeters. Its 6.3 kg, claimed 30 hours (Manufacturer specified) battery life, IP67 protection, aux input and stereo playback make it a practical option for its intended room or portable use. Measured bass extension of ~52Hz (-10dB).
Cons: Bass is limited by its ~52Hz specification. There is no companion app. A peak around 8kHz, and bass does not reach as deep as the top-ranked speakers.
Full Sony ULT Field 7 review and specifications →
| Amplifier Power | 100W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~52Hz |
| Battery Life | 30 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 20.2” x 8.8” x 8.7” (512 x 224 x 222 mm) |
| Drivers | 2x 114mm x 114mm X-Balanced woofers + 2x 46mm (1.9”) tweeters |
| EQ | Yes (App + ULT button) |
| Guitar Input | Yes |
| IP Rating | IP67 |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/1.5A) |
| Power Input | AC Power cord |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 13.9 lbs (6.3 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Sony ULT Field 7 vs Skullcandy Barrel
- Sony ULT Field 7 vs Soundcore Rave Party 2
- Sony ULT Field 7 vs Yeahbox Sonic Boom Max 3
- Sony ULT Field 7 vs Teufel Boomster NG (2017)
- Sony ULT Field 7 vs Onn Medium Party Speaker Gen 2
- Sony ULT Field 7 vs JBL Partybox On the Go
- Sony ULT Field 7 vs Sony SRS-XG500
- Sony ULT Field 7 vs Gemini GRV-650L
- See all 75 comparisons