Short answer: the Zealot ZE01. It ranks #35 of 90 boombox speakers by sound quality, rated 3.7/5, at $169.90; the Sony ULT Field 7 ranks #56, rated 3.2/5, and costs $400, which makes this an easy call rather than a real tradeoff.
The case for the Sony ULT Field 7: Better sounding than the XG500. The tradeoff: Still not as deep bass as the top ranked speakers.
Buy the Zealot ZE01. It is rated higher for sound quality than the Sony ULT Field 7 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Zealot ZE01 | Sony ULT Field 7 | |
|---|---|---|
| Price | $169.90 | $400 |
| Ranked | #35 of 90 in Boombox Size Portable Bluetooth Speakers | #56 of 90 in Boombox Size Portable Bluetooth Speakers |
| App | No | No |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 45Hz | ~52Hz |
| Battery Life | 40 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| EQ | Yes (multiple modes) | Yes (App + ULT button) |
| IP Rating | IPX6 | IP67 |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| MicroSD Playback | Yes | - |
| Party Mode | No | Yes (Party Connect up to 100 speakers) |
| Power Input | USB-C | AC Power cord |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 13.2 lbs (6.0 kg) | 13.9 lbs (6.3 kg) |
| Power Bank | Yes (USB-A + USB-C) | Yes (USB-A, 5V/1.5A) |
| USB Playback | Yes | Yes |
| Built-in Microphone | No | Yes |
| Amplifier Power | 120W RMS / 150W peak | 100W |
| Dimensions | 13.1” x 11.2” x 8.1” (332 x 284 x 207 mm) | 20.2” x 8.8” x 8.7” (512 x 224 x 222 mm) |
| Drivers | Dual 120mm speakers + dual 42mm speakers | 2x 114mm x 114mm X-Balanced woofers + 2x 46mm (1.9”) tweeters |
| Digital Aux Input | No | No |
| Bluetooth Version | 5.4 | 5.2 |
| Guitar Input | - | Yes |
| Microphone Input | - | Yes (Karaoke mode with echo effect) |
| Strap | - | No |
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Prices on this page were last checked October 2, 2026 at 10:18 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
Zealot ZE01: $169.90 Amazon AliExpress eBay
Pros: Appears to be the same internals as the S95. Measured bass extension of 45Hz (-10dB).
Cons: A little rolled off up top and not that balanced through the rest of the range. Clarity isn’t as good as better speakers.
Full Zealot ZE01 review and specifications →
| Amplifier Power | 120W RMS / 150W peak |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 45Hz |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.4 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 13.1” x 11.2” x 8.1” (332 x 284 x 207 mm) |
| Drivers | Dual 120mm speakers + dual 42mm speakers |
| EQ | Yes (multiple modes) |
| IP Rating | IPX6 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A + USB-C) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 13.2 lbs (6.0 kg) |
- 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 | Yes |
| 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
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- 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 76 comparisons