Short answer: the W-King D320. It ranks #51 of 175 medium speakers by sound quality, rated 3.6/5, at $52.92; the Sony ULT Field 1 ranks #100, rated 3.1/5, and costs $138, so there is little reason to consider the other one.
The W-King D320 is the better-sounding, longer-running pick. A 3.1 lbs (1.4 kg), IP67-rated travel speaker with claimed 40W output, USB-C charging, aux and microSD playback, speakerphone capability and an app with adjustable EQ. It is rated for 24 hours of battery against 12 for the Sony ULT Field 1. It keeps a wired aux input, which the Sony ULT Field 1 lacks. The catch: A single D320 is not stereo, and its warm balance trades away some detail and upper-treble air.
The Sony ULT Field 1 is the lighter choice. IP67 rated, survives drops and 1m submersion. At 1.4 lbs (650 g) it weighs much less than the W-King D320 at 3.1 lbs (1.4 kg). Watch for: Upper midrange peak, rolled off treble.
Buy the W-King D320. It is rated higher for sound quality than the Sony ULT Field 1 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
| W-King D320 | Sony ULT Field 1 | |
|---|---|---|
| Price | $52.92 | $138.00 |
| Ranked | #51 of 175 in Medium Size Portable Bluetooth Speakers | #100 of 175 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | Yes | No |
| Battery Life | 24 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Built-in Microphone | Yes | Yes |
| EQ | Yes | Yes |
| IP Rating | IP67 | IP67 |
| MicroSD Playback | Yes | - |
| Stereo | No | No |
| Omnidirectional | No | No |
| TWS | No | Yes |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.3 |
| Dimensions | 3.3” x 8.4” (83 x 214 mm) (diameter x height) | 8.1” x 3” x 3” (206 x 77 x 76 mm) |
| Drivers | 52mm x 91mm woofer, 2x 25mm tweeters + 2x passive radiators | 83mm x 42mm woofer, 16mm tweeter + passive radiator |
| Frequency Response | 100Hz - 18kHz (Manufacturer specified) | - |
| Power Input | USB-C | USB-C |
| Amplifier Power | 40W | - |
| Weight | 3.1 lbs (1.4 kg) | 1.4 lbs (650 g) |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | AAC, SBC |
| Party Mode | - | Yes (Party Connect up to 100 speakers) |
| Power Bank | - | No |
| Strap | - | Yes (detachable strap) |
Related Speaker Comparisons
How W-King D320 compares with other leading options:
- EarFun Uboom L vs W-King D320
- Soundcore Motion 300 vs W-King D320
- Soundcore Motion+ vs W-King D320
- Soundcore Boost “upgraded” 2021 vs W-King D320
- Minirig 4 vs W-King D320
Prices on this page were last checked October 12, 2026 at 4:13 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
W-King D320: $52.92 AliExpress $52.92 eBay
Pros: A 1.4kg, IP67-rated travel speaker with claimed 40W output, USB-C charging, aux and microSD playback, speakerphone capability and an app with adjustable EQ. Owner reports praise its loud, deep-for-size bass and long runtime, while its two tweeters and passive radiators make it a capable choice for casual outdoor listening.
Cons: A single D320 is not stereo, and its warm balance trades away some detail and upper-treble air. The claimed 100Hz low-frequency specification suggests that its perceived bass should not be mistaken for true sub-bass; evaluate its tuning with the app rather than expecting a neutral default.
Full W-King D320 review and specifications →
| Released | Aug 2023 (3 years ago) |
|---|---|
| Amplifier Power | 40W |
| App | Yes |
| Aux Input | Yes |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 3.3” x 8.4” (83 x 214 mm) (diameter x height) |
| Drivers | 52mm x 91mm woofer, 2x 25mm tweeters + 2x passive radiators |
| EQ | Yes |
| Frequency Response | 100Hz - 18kHz (Manufacturer specified) |
| IP Rating | IP67 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | No |
| TWS | No |
| Weight | 3.1 lbs (1.4 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Techder Audios: W-king D320 VS Mifa Wildrod "DUAL VS SINGLE TWEETERS!" More from techderaudios →
- Jay’s Straight Up Reviews & More: Ultimate Ears MegaBoom 4 vs W-King D320 🔋Does Paying More Get You Less? 😧 More from JaysStraightUpReviews →
- Audio y Mas 🔊: Altavoces JBL Flip 6 vs W-King D320: ¿Cuál es el mejor en calidad de sonido? 🔊
- Head-to-Head Comparisons
Sony ULT Field 1: $138.00 Amazon $138.00 Lowest Sony $139.99 eBay
Older models: the Sony XB23 (ranked higher, rated 3.3/5), the Sony SRS-XB20 (ranked lower, rated 2.8/5), the Sony SRS-XB21 (ranked lower, rated 2.7/5) and the Sony SRS-XE200 (ranked lower, rated 2.5/5). See every Sony XB and ULT generation.
Same family: the Sony ULT Field 7 (larger model, rated 3.2/5), the Sony ULT Tower 10 (larger model, rated 3.9/5), the Sony ULT Field 3 (larger model, ranked higher, rated 3.4/5), the Sony ULT Field 5 (larger model, rated 3.5/5), the Sony ULT Tower 5 (larger model, rated 4.5/5), the Sony ULT Tower 7 (larger model, rated 4.7/5), the Sony ULT Tower 9 (larger model, rated 4.2/5) and the Sony ULT Tower Max (larger model, rated 4.8/5).
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 →
| Released | Apr 2024 (2 years ago) |
|---|---|
| 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
- Techder Audios: Sony ULT Field 1 VS Teufel Rockster Go 2 “CLOSE CALL?” More from techderaudios →
- Jay’s Straight Up Reviews & More: Ultimate Ears MegaBoom 4 vs Sony ULT Field 1 😧 $200 vs $128 Cylinder Bluetooth Speaker Matchup More from JaysStraightUpReviews →
- Storytripper HD: Huawei Soundjoy 2 vs Edifier ES60 vs Sony ULT Field 1 More from storytripperhd →
- New Stuff TV 2: Sony ULT Field 1 vs JBL Flip 6, JBL Charge 5 & Soundcore Motion 300 More from NewStuffTV1 →
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- See all 140 comparisons