Short answer: the Sony ULT Field 1. It ranks #86 of 150 medium speakers by sound quality, rated 3.1/5, at $138. The DBSONO X-Blast F37 ranks #102, rated 2.8/5, at $69.99, $68.01 cheaper, which does not close the gap in sound quality.
Why pick the Sony ULT Field 1: IP67 rated, survives drops and 1m submersion. Watch for: Upper midrange peak, rolled off treble.
The case for the DBSONO X-Blast F37: 25W woofer + 10W tweeter + rear passive radiator. The catch: Very recessed lower mids, peaky upper mids, just not a great frequency response overall.
Buy the Sony ULT Field 1. It is rated higher for sound quality, and the $68.01 you would save on the DBSONO X-Blast F37 does not close the gap.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Sony ULT Field 1 | DBSONO X-Blast F37 | |
|---|---|---|
| Price | $138.00 | $69.99 |
| Ranked | #86 of 150 in Medium Size Portable Bluetooth Speakers | #102 of 150 in Medium Size Portable Bluetooth Speakers |
| App | Yes | - |
| Aux Input | No | No |
| Battery Life | 12 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| Built-in Microphone | Yes | - |
| EQ | Yes | Yes (Bass Boost) |
| IP Rating | IP67 | IPX5 |
| Party Mode | Yes (Party Connect up to 100 speakers) | - |
| Power Bank | No | - |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 1.4 lbs (650 g) | 1.7 lbs (771 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, SBC | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.3 | 6.0 |
| Dimensions | 8.1” x 3” x 3” (206 x 77 x 76 mm) | 8” x 2.5” x 3.6” (202 x 64 x 90.9 mm) |
| Drivers | 83mm x 42mm woofer, 16mm tweeter + passive radiator | 25W woofer, 10W tweeter, passive radiator |
| Digital Aux Input | No | No |
| Strap | Yes (detachable strap) | - |
| Bass Extension (-10dB) | - | 49Hz |
| Frequency Response | - | 100Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | - | 35W |
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Prices on this page were last checked September 30, 2026 at 2:57 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 1: $138.00 Amazon eBay
Older models: the Sony XB23 (ranked higher, rated 3.3/5) and the Sony SRS-XB20 (ranked lower, rated 2.8/5).
Pros: IP67 rated, survives drops and 1m submersion. Real-world battery around 28+ hours with ULT (bass boost) mode off. Stereo-pairs with a second ULT Field 1.
Cons: Upper midrange peak, rolled off treble
Full Sony ULT Field 1 review and specifications →
| App | Yes |
|---|---|
| Aux Input | No |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | AAC, SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 8.1” x 3” x 3” (206 x 77 x 76 mm) |
| Drivers | 83mm x 42mm woofer, 16mm tweeter + passive radiator |
| EQ | Yes |
| IP Rating | IP67 |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (detachable strap) |
| TWS | Yes |
| Weight | 1.4 lbs (650 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Sony ULT Field 1 vs JBL Grip
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DBSONO X-Blast F37: $69.99 Amazon eBay
Pros: 25W woofer + 10W tweeter + rear passive radiator. Bluetooth 6.0 with a 30m range and TWS stereo pairing. IPX5 water resistance. Measured bass extension of 49Hz (-10dB).
Cons: Very recessed lower mids, peaky upper mids, just not a great frequency response overall.
Full DBSONO X-Blast F37 review and specifications →
| Amplifier Power | 35W |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 49Hz |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 6.0 |
| Digital Aux Input | No |
| Dimensions | 8” x 2.5” x 3.6” (202 x 64 x 90.9 mm) |
| Drivers | 25W woofer, 10W tweeter, passive radiator |
| EQ | Yes (Bass Boost) |
| Frequency Response | 100Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX5 |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| Weight | 1.7 lbs (771 g) |
- Reviews, Comparisons and Sound Samples
- Alan Ross - The Anti Shill!: DBSONO X-Blast F37 vs Bose Soundlink Flex 2 - They all want to be me 😊 More from alanrossreviews →
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- Alan Ross - The Anti Shill!: DBsono X-Blast F37 is warmer than the Bahamas in a heatwave!
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