These sit in different size classes, so this is not a straight ranking comparison. The Sony ULT Field 3 ranks #74 of 164 medium speakers by sound quality at $208; the Sony ULT Field 7 ranks #56 of 91 boombox speakers by sound quality at $400.
The Sony ULT Field 3 is the lighter choice. IP67 rated, dustproof and water resistant. At 2.6 lbs (1.2 kg) it weighs much less than the Sony ULT Field 7 at 13.9 lbs (6.3 kg). The tradeoff: Sounds a bit hollow, a bit boosted in the treble.
What the Sony ULT Field 7 does well: It keeps a wired aux input, which the Sony ULT Field 3 lacks. Watch for: A peak around 8kHz, and bass does not reach as deep as the top-ranked speakers.
Buy the Sony ULT Field 3 at $208 for a medium speaker, or the Sony ULT Field 7 at $400 for a boombox speaker instead.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Sony ULT Field 3 | Sony ULT Field 7 | |
|---|---|---|
| Price | $208.00 | $400 |
| Ranked | #74 of 164 in Medium Size Portable Bluetooth Speakers | #56 of 91 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | Yes |
| Battery Life | 24 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC, AAC, LDAC |
| Bluetooth Version | 5.2 | 5.2 |
| Built-in Microphone | Yes | Yes |
| Dimensions | 10.1” x 4.4” x 3.1” (256 x 113 x 79 mm) | 20.2” x 8.8” x 8.7” (512 x 224 x 222 mm) |
| Drivers | 1x 20mm tweeter + 1x 86mm x 46mm woofer | 2x 114mm x 114mm X-Balanced woofers + 2x 46mm (1.9”) tweeters |
| EQ | Yes (App + ULT button) | Yes (App + ULT button) |
| IP Rating | IP67 | IP67 |
| Party Mode | Yes (Party Connect up to 100 speakers) | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C, 5V/1.5A) | Yes (USB-A, 5V/1.5A) |
| Power Input | USB-C | AC Power cord |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 2.6 lbs (1.2 kg) | 13.9 lbs (6.3 kg) |
| Amplifier Power | 27W | 100W |
| Digital Aux Input | No | No |
| Strap | Yes (detachable shoulder strap) | No |
| Bass Extension (-10dB) | - | ~52Hz |
| Guitar Input | - | Yes |
| Microphone Input | - | Yes (Karaoke mode with echo effect) |
| USB Playback | - | Yes |
Related Speaker Comparisons
More worthwhile head-to-heads for Sony ULT Field 3:
- Sony ULT Field 3 vs Earfun Uboom L
- Soundcore Motion 300 vs Sony ULT Field 3
- Soundcore Motion+ vs Sony ULT Field 3
- Soundcore Boost “upgraded” 2021 vs Sony ULT Field 3
- Sony ULT Field 3 vs Minirig 4
Prices on this page were last checked October 4, 2026 at 9:58 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
Sony ULT Field 3: $208.00 Amazon eBay
Older models: the Sony XB33 (ranked lower, rated 3.4/5), the Sony SRS-XE300 (ranked lower, rated 2.8/5) and the Sony SRS-XB30 (ranked lower, rated 2.6/5).
Pros: IP67 rated, dustproof and water resistant. 24 hour battery life. App with 10-band EQ. Party Connect with up to 100 speakers. USB-C in/out for charging your phone.
Cons: Sounds a bit hollow, a bit boosted in the treble. Custom EQ and the ULT bass-boost button can’t be used together: turning on ULT disables the EQ. Bass is very weak with ULT off. Lost to the JBL Charge 6 in a side-by-side comparison despite being the larger speaker.
Full Sony ULT Field 3 review and specifications →
| Amplifier Power | 27W |
|---|---|
| App | Yes |
| Aux Input | No |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 10.1” x 4.4” x 3.1” (256 x 113 x 79 mm) |
| Drivers | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| EQ | Yes (App + ULT button) |
| IP Rating | IP67 |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C, 5V/1.5A) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| Weight | 2.6 lbs (1.2 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Sony ULT Field 3 vs Bose Soundlink Mini
- Sony ULT Field 3 vs Xiaomi Mi Portable
- Sony ULT Field 3 vs Sony XB33
- Sony ULT Field 3 vs Bose Soundlink Mini 2
- Sony ULT Field 3 vs Bose Portable Smart Speaker
- Sony ULT Field 3 vs Beats Pill 2024
- Sony ULT Field 3 vs Soundcore 3
- Sony ULT Field 3 vs JBL Flip 5
- See all 142 comparisons
Sony ULT Field 7: $400 Amazon eBay
Older model: the Sony SRS-XG500 (ranked lower, rated 3/5).
Smaller model: the Sony ULT Field 1 (rated 3.1/5).
Larger model: the Sony ULT Tower 10 (rated 3.9/5).
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
- 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 85 comparisons