Short answer: the Sony ULT Field 5 if sound quality matters most, the W-King D8 if price matters most. The Sony ULT Field 5 ranks #41 of 77 large speakers at $198. The W-King D8 ranks #43 at $79.98, $118.02 cheaper.
What the Sony ULT Field 5 offers: IP67 rated, dustproof and water resistant. 25 hour battery life. App with 10-band EQ. Party Connect with up to 100 speakers. USB-C in/out for charging your phone. Watch for: Bass not as deep as others in the category, and sound quality overall is just okay. ULT button makes a really loud tone when pressed. Just an okay speaker.
What the W-King D8 offers: Decent sounding. Watch for: Slightly recessed mids. Distorted at high volumes.
Buy the Sony ULT Field 5 when sound quality outweighs the price for you, and the W-King D8 when the price outweighs sound quality instead.
Specifications Side By Side
| Sony ULT Field 5 | W-King D8 | |
|---|---|---|
| Price | $198 | $79.98 |
| Ranked | #41 of 77 in Large Size Portable Bluetooth Speakers | #43 of 77 in Large Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Battery Life | 25 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC |
| Bluetooth Version | 5.3 | - |
| Built in Microphone | Yes | Yes |
| Dimensions | 12.6" x 5.7" x 4.9" (320 x 144 x 125 mm) | 12.6" x 4.8" x 4.7" (320 x 121.9 x 119.4 mm) |
| Drivers | 2x 46mm tweeters + 1x 79mm x 107mm woofer | 2x 70mm woofers + 2x 31mm tweeters + passive radiators |
| EQ | Yes (App + ULT button) | No |
| IP Rating | IP67 | IPX7 |
| Party Mode | Yes (Party Connect up to 100 speakers) | No |
| Power Bank | Yes (USB-C) | Yes (USB-A) |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | No |
| Weight | 7.3 lbs / 3.3 kg | 5.4 lbs / 2.43 kg |
| Output Power | 27W | 90W max / 50W RMS |
| Digital Aux Input | No | No |
| Bass Extension (-10dB) | - | 49Hz |
| Max Volume | - | 101dB |
| MicroSD Playback | - | Yes |
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Prices on this page were last checked August 27, 2026 at 10:09 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 5: $198 Amazon eBay
Pros: IP67 rated, dustproof and water resistant. 25 hour battery life. App with 10-band EQ. Party Connect with up to 100 speakers. USB-C in/out for charging your phone.
Cons: Bass not as deep as others in the category, and sound quality overall is just okay. ULT button makes a really loud tone when pressed. Just an okay speaker.
Full Sony ULT Field 5 review and specifications →
| App | Yes |
|---|---|
| Aux Input | Yes |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.3 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 12.6" x 5.7" x 4.9" (320 x 144 x 125 mm) |
| Drivers | 2x 46mm tweeters + 1x 79mm x 107mm woofer |
| EQ | Yes (App + ULT button) |
| IP Rating | IP67 |
| Omnidirectional | No |
| Output Power | 27W |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 7.3 lbs / 3.3 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Danny Pops: Don’t TOUCH that ULT Button! Sony ULT Field 5 Review More from DannyPops →
- Mark Ellis Reviews: Sony just changed summer sound 🤨 | Sony ULT Field 5 & 3 Review
- Dominik Reviews: Sony ULT Field 5 vs JBL Xtreme 4 - Outdoor Sound Test - Sony shines or not? More from Dominik Reviews →
- Joy & Oluv’Sone: Sony ULT Field 5 vs Anker SoundCore Boom 2 - listening test More from Oluv’Sone →
- Reddit Search for Sony ULT Field 5 Review
- Head-to-Head Comparisons
- Sony ULT Field 5 vs Sony SRS-XB43
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- Sony ULT Field 5 vs Harman Kardon Onyx Studio 4
- Sony ULT Field 5 vs Mifa WildCamping
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W-King D8: $79.98 Amazon eBay
Pros: Decent sounding.
Cons: Slightly recessed mids. Distorted at high volumes.
Full W-King D8 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 49Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 12.6" x 4.8" x 4.7" (320 x 121.9 x 119.4 mm) |
| Drivers | 2x 70mm woofers + 2x 31mm tweeters + passive radiators |
| EQ | No |
| IP Rating | IPX7 |
| Max Volume | 101dB |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Output Power | 90W max / 50W RMS |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | No |
| Weight | 5.4 lbs / 2.43 kg |
- Reviews, Comparisons and Sound Samples
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