Short answer: the Sony ULT Field 7 if sound quality matters most, the W-King D10 if price matters most. The Sony ULT Field 7 ranks #59 of 98 boombox speakers, rated 3.2/5, at $448.99. The W-King D10 ranks #76, rated 2.7/5, at $119.98, $329.01 cheaper.
The Sony ULT Field 7 is the better-sounding, deeper-bass choice. Its bass reaches about 52Hz before falling 10dB, against 60Hz for the W-King D10. It supports LDAC Bluetooth, which the W-King D10 lacks. It links with other speakers (Party Connect up to 100 speakers), which the W-King D10 cannot. The catch: A peak around 8kHz, and bass does not reach as deep as the top-ranked speakers.
The W-King D10 is the longer-running, lighter pick. 70W RMS output with 120W peak power, exceptional 42-hour battery life, power bank function, IPX6 waterproof, 106dB max volume, EQ and bass boost, microphone input for karaoke, MicroSD card support, USB playback, TWS pairing. It is rated for 42 hours of battery against 30 for the Sony ULT Field 7. At 7.9 lbs (3.6 kg) it weighs much less than the Sony ULT Field 7 at 13.9 lbs (6.3 kg). The catch: Upper bass boost, bass not that deep.
Buy the Sony ULT Field 7 when sound quality outweighs the price for you, and the W-King D10 when the price outweighs sound quality instead.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Sony ULT Field 7 | W-King D10 | |
|---|---|---|
| Price | $448.99 | $119.98 |
| Ranked | #59 of 98 in Boombox Size Portable Bluetooth Speakers | #76 of 98 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | ~52Hz | 60Hz |
| Battery Life | 30 hours (Manufacturer specified) | 42 hours (Manufacturer specified) |
| Guitar Input | Yes | - |
| IP Rating | IP67 | IPX6 |
| Microphone Input | Yes (Karaoke mode with echo effect) | Yes (Karaoke mode with echo effect) |
| Party Mode | Yes (Party Connect up to 100 speakers) | No |
| Power Bank | Yes (USB-A, 5V/1.5A) | Yes |
| Power Input | AC Power cord | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| USB Playback | Yes | Yes |
| Weight | 13.9 lbs (6.3 kg) | 7.9 lbs (3.6 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC |
| App | No | No |
| EQ | Yes (App + ULT button) | Yes (bass boost + DSP) |
| TWS | Yes | Yes |
| Built-in Microphone | Yes | No |
| Bluetooth Version | 5.2 | 5.4 |
| Dimensions | 20.2” x 8.8” x 8.7” (512 x 224 x 222 mm) | 14.5” x 7.6” x 6.1” (369 x 194 x 154 mm) |
| Amplifier Power | 100W | 120W max / 70W RMS |
| Drivers | 2x 114mm x 114mm X-Balanced woofers + 2x 46mm (1.9”) tweeters | 2x 40mm drivers + passive radiator |
| Digital Aux Input | No | No |
| Strap | No | - |
| Aux Latency | - | 50ms |
| Bluetooth Latency | - | 133ms |
| Maximum SPL | - | 106dB (measured by Alan Ross Reviews) |
| MicroSD Playback | - | Yes |
| FM Tuner | - | No |
Related Speaker Comparisons
More worthwhile head-to-heads for Sony ULT Field 7:
- Sony ULT Field 7 vs Tribit Stormbox Blast
- Harman Kardon Go + Play 3 vs Sony ULT Field 7
- JBL Partybox Encore 2 vs Sony ULT Field 7
- JBL PartyBox On-The-Go 2 Plus vs Sony ULT Field 7
- JBL Partybox Encore Essential 2 vs Sony ULT Field 7
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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
Sony ULT Field 7: $448.99 Amazon $448.99 eBay
Older model: the Sony SRS-XG500 (ranked lower, rated 3/5). See every Sony XB and ULT generation.
Same family: the Sony ULT Field 1 (smaller model, rated 3.1/5), the Sony ULT Tower 10 (larger model, rated 3.9/5), the Sony ULT Field 3 (larger model, 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: 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 →
| Released | Apr 2024 (2 years ago) |
|---|---|
| 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
- Dominik Reviews: Sony ULT Field 7 vs Tribit Stormbox Blast Both good? 😂 More from Dominik Reviews →
- Jay’s Straight Up Reviews & More: SONY ULT Field 7 💣vs JBL Boombox 3 🧨 Showdown! 🪇Let’s Shake it Up! 🔋Battery Powered Basement Battle More from JaysStraightUpReviews →
- Jagist reviews: Xdobo Wow Max Vs Sony Ult Field 7!!! More from Jagistreviews →
- Head-to-Head Comparisons
- Sony ULT Field 7 vs Skullcandy Barrel
- Sony ULT Field 7 vs Yeahbox Sonic Boom Max 3
- Sony ULT Field 7 vs Soundcore Rave Party 2
- 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 Gemini GRV-650L
- Sony ULT Field 7 vs Sony SRS-XG500
- See all 86 comparisons
W-King D10: $119.98 Amazon $119.98 eBay
Pros: 70W RMS output with 120W peak power, exceptional 42-hour battery life, power bank function, IPX6 waterproof, 106dB max volume, EQ and bass boost, microphone input for karaoke, MicroSD card support, USB playback, TWS pairing. Measured bass extension of 60Hz (-10dB).
Cons: Upper bass boost, bass not that deep.
Full W-King D10 review and specifications →
| Released | Jan 2022 (4 years ago) |
|---|---|
| Amplifier Power | 120W max / 70W RMS |
| App | No |
| Aux Input | Yes |
| Aux Latency | 50ms |
| Bass Extension (-10dB) | 60Hz |
| Battery Life | 42 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 133ms |
| Bluetooth Version | 5.4 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 14.5” x 7.6” x 6.1” (369 x 194 x 154 mm) |
| Drivers | 2x 40mm drivers + passive radiator |
| EQ | Yes (bass boost + DSP) |
| FM Tuner | No |
| IP Rating | IPX6 |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) |
| MicroSD Playback | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 7.9 lbs (3.6 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons