The Sony ULT FIELD 7 is a portable Bluetooth speaker with party features. As part of the new ULT POWER SOUND lineup, it follows in the design footsteps of the Sony SRS-XG500 but adds two levels of switchable bass enhancement via the 'ULT' button. With up to 30 hours of advertised battery life, an IP67 rating against dust and water damage, and a mic/instrument input (with integrated karaoke effects like pitch adjustment and echo), this speaker is ready to be the life of the party.
Our Verdict
The Sony ULT FIELD 7 is good for music. It's geared towards styles of music that get the party going, so its slightly warm sound and extra bass on tap via the ULT button add punch to groovy basslines and kicks, though it doesn't produce a lot of deep low-bass rumble. Its mid and treble reproduction are balanced, so vocals and other mid-range instruments come through clearly and naturally. You can always turn to the graphic EQ and presets in the app to help adjust the sound to your liking, too. It can also get remarkably loud, certainly enough to elicit noise complaints, though there's a fair bit of bass-range compression as you crank the volume. While this speaker can play back stereo content, audio doesn't sound consistent from every angle.
- Graphic EQ and presets in app.
- Can get loud.
- Vocal/guitar input and karaoke-friendly effects.
- Sub-par directivity.
- Bass range compresses as you approach max volume.
The Sony ULT FIELD 7 is passable for videos and movies. Its punchy bass, balanced mid-range, and well-reproduced treble mean it can handle both cinematic effects and dialogue, and it can get loud enough for larger watch parties. Its latency with iOS devices is quite low, too, and only slightly higher with Android devices, so you won't experience many lip-sync issues. That said, not everyone watching will experience consistent audio delivery, as its middling directivity can affect how the treble range is perceived from different listening angles. There's also quite a bit of compression when the volume is cranked, which can affect punch in the bass range.
- Graphic EQ and presets in app.
- Can get loud.
- Sub-par directivity.
- Bass range compresses as you approach max volume.
The Sony ULT FIELD 7 is great for podcasts. It features a balanced mid-range that does a great job of rendering your favorite hosts' voices clearly, and you can always crank up the mids via EQ in the companion app. While it's fairly portable for its size, its high max volume can come in handy if you'd rather keep a podcast playing when you move to a different room. That said, its directivity isn't the best, so voices will be harder to discern depending on your position relative to the speaker.
- Over 10 hours of continuous battery life.
- IP67 rated for protection against dust and water.
- Graphic EQ and presets in app.
- Sub-par directivity.
The Sony ULT FIELD 7 doesn't have any voice assistant capabilities and isn't well-suited for this use.
The Sony ULT FIELD 7 is great for outdoor use. It's quite portable and rated IP67, so it's well protected against the elements and can even be submerged in water for a limited time. It can also last for more than 10 hours on a single charge, which can be extended further if you lower the volume or turn off the RGB lights. Additionally, it can get loud enough to soundtrack outdoor parties, though its directivity isn't the best, and you'll hear some compression artifacts in the bass range if you crank the volume.
- Over 10 hours of continuous battery life.
- IP67 rated for protection against dust and water.
- Can get loud.
- Vocal/guitar input and karaoke-friendly effects.
- Sub-par directivity.
- Bass range compresses as you approach max volume.
Changelog
- Updated Jul 28, 2026: This review has been updated to Test Bench 1.0.1. This includes the Test Bench 1.0 updates to all of our Sound tests: Frequency Response Accuracy, Raw Frequency Response, Directivity, and Loudness, as well as the revised Low-Frequency Extension calculation and related DRC updates introduced in Test Bench 1.0.1. There have also been text changes throughout the review, including to the usages and product comparisons, where applicable, to match these results. You can read more about these changes in our Test Bench 1.0 changelog and Test Bench 1.0.1 changelog.
- Updated Jul 13, 2026: This review has been updated to Test Bench 1.0, which includes new results for all of our Sound tests: Frequency Response Accuracy, Raw Frequency Response, Directivity, and Loudness. There have also been text changes made throughout the review, including to the usages and product comparisons, to match these results. You can read more about these changes in our changelog.
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Updated Jun 27, 2025:
The Compared To Other Speakers was updated to mention the smaller Sony ULT FIELD 5.
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Updated Jun 17, 2025:
The App section has a new image, video, and text to discuss the Sony Connect Sound update.
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Differences Between Sizes And Variants
The Sony ULT FIELD 7 is available in one color variant: 'Black.' You can see our unit's label here.
If you encounter another variant of this speaker, please let us know in the comments, and we'll update our review.
Popular Speaker Comparisons
The Sony ULT FIELD 7 is a portable Bluetooth speaker with party-centric features. It's the bigger sibling of the Sony ULT FIELD 1 and fits in the middle of the new ULT POWER SOUND line of speakers, as it's less powerful but more portable than the Sony ULT TOWER 10. As the upsized sibling to the Sony ULT FIELD 5, the ULT FIELD 7 is roughly twice the weight and a bit louder, with an added mic/guitar input, but the battery is a bit longer-lasting on the ULT FIELD 5. In terms of design and features, it can be considered an evolution of the Sony SRS-XG500, with two levels of switchable bass enhancement. Its powerful sound and size also put it in direct competition with the JBL Boombox 3, though the Sony has a more bass-heavy sound. However, the JBL has a longer battery life and compresses less at max volume.
See our recommendations for the best Bluetooth speakers, the best waterproof speakers, and the best Bluetooth speakers for bass.
The JBL Boombox 3 and the Sony ULT FIELD 7 are similarly sized speakers that straddle the line between portability and party-ready. While they weigh a similar amount, feature IP67 ratings, and take up the same amount of real estate in a bag, the JBL is better built overall and can even float in water. Performance-wise, they're neck-and-neck, though the JBL edges ahead in directivity. Its continuous battery life is also substantially longer than that of the Sony speaker.
The Sony ULT FIELD 7 offers some key advantages over the JBL PartyBox Stage 320. The Sony speaker's IP67 rating makes it a more durable, all-weather alternative to the JBL, and its switchable bass levels via the 'ULT' button help you tailor the low-end to your preferences. It's also quite a bit more portable and can be carried around over your shoulder using its carrying strap. That said, the JBL boasts a much longer battery life and slightly better directivity.
The Sony ULT FIELD 7 is essentially a revamped version of the Sony SRS-XG500. While the design essence remains the same, and both speakers feature IP67 ratings and karaoke features, the newer speaker now offers two toggleable levels of bass enhancement via the 'ULT' button. Beyond this, though, there aren't too many benefits to picking up the newer edition. The ULT FIELD 7 has a shorter continuous battery life and higher latency with iOS and Android devices, so if you can find the SRS-XG500 in stock or on sale, it could represent a better value for you.
The Sony ULT FIELD 7 and the JBL PartyBox 110 are similarly loud speakers that are equipped with party-centric features, like RGB lights and mic/guitar inputs for karaoke. That said, the Sony is much more portable and features an IP67 rating, so it can be submerged in water, whereas the JBL is only IPX4 rated for water resistance. The Sony speaker also has a more balanced frequency response, and it gets a little louder, too. That said, the JBL has better directivity.
Test Results
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