Short answer: the Marshall Tufton for battery life, the Sony ULT Field 7 for a more balanced sound. The Tufton claims 20 hours of play and a 20-min quick-charge for 4 hours, but its upper bass is boomy, its treble is boosted and it is not very balanced overall. The Sony is called better sounding than the XG500, though its bass is still not as deep as the top ranked speakers.
Buy the Sony ULT Field 7. It is rated higher for sound quality, and saving $21.01 with the Marshall Tufton does not make up for the sound-quality gap.
Battery life favors the Sony ULT Field 7: rated for 30 hours against 20 hours for the Marshall Tufton.
Water resistance is not close: the Sony ULT Field 7 is rated at IP67 (brief submersion), well ahead of the Marshall Tufton at IPX2 (light drips).
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Sony ULT Field 7 | Marshall Tufton | |
|---|---|---|
| Price | $400 | $378.99 |
| Ranked | #56 of 90 in Boombox Size Portable Bluetooth Speakers | #76 of 90 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | ~52Hz | 42Hz |
| Battery Life | 30 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| Guitar Input | Yes | - |
| IP Rating | IP67 | IPX2 |
| Microphone Input | Yes (Karaoke mode with echo effect) | - |
| Party Mode | Yes (Party Connect up to 100 speakers) | No |
| Power Bank | Yes (USB-A, 5V/1.5A) | No |
| Power Input | AC Power cord | USB-C |
| Stereo | Yes | No |
| Omnidirectional | No | Yes |
| USB Playback | Yes | No |
| Weight | 13.9 lbs (6.3 kg) | 10.8 lbs (4.9 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC |
| App | No | No |
| EQ | Yes (App + ULT button) | Yes (hidden bass and treble adjustment) |
| TWS | Yes | No |
| Built-in Microphone | Yes | Yes |
| Bluetooth Version | 5.2 | - |
| Dimensions | 20.2” x 8.8” x 8.7” (512 x 224 x 222 mm) | 9” x 6.4” x 13.8” (229.1 x 163.1 x 350 mm) |
| Amplifier Power | 100W | 80W |
| Drivers | 2x 114mm x 114mm X-Balanced woofers + 2x 46mm (1.9”) tweeters | 1x 5.25” woofer + 2x 2” full-range + 1x 16mm tweeter |
| Digital Aux Input | No | No |
| Strap | No | Yes (built-in strap) |
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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
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
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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
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Marshall Tufton: $378.99 Amazon eBay
Pros: 20 hour battery life; 2.5 hour full charge, or 20-min quick-charge for 4 hours of play. 3-way speaker design covers full frequency range in 360°. Sturdy construction with IPX2 rating. Measured bass extension of 42Hz (-10dB).
Cons: Not much lower bass, upper bass boomy, boosted treble, not very balanced overall. Not as loud as others in the class. Very low water rating
Full Marshall Tufton review and specifications →
| Amplifier Power | 80W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 42Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 9” x 6.4” x 13.8” (229.1 x 163.1 x 350 mm) |
| Drivers | 1x 5.25” woofer + 2x 2” full-range + 1x 16mm tweeter |
| EQ | Yes (hidden bass and treble adjustment) |
| IP Rating | IPX2 |
| Omnidirectional | Yes |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (built-in strap) |
| TWS | No |
| USB Playback | No |
| Weight | 10.8 lbs (4.9 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons