Short answer: the Sony ULT Field 5 on measured sound quality, the Bogasing S8 Pro on price. The Sony ULT Field 5 ranks #41 of 78 large speakers at $198. The Bogasing S8 Pro ranks #63 at $152, $46 cheaper.
On the Bogasing S8 Pro side: Use “vocal” mode for the flattest response, still not great. Set against that: Huge treble peaks in most sound modes, sounds sizzling and harsh.
The case for the Sony ULT Field 5: IP67 rated, dustproof and water resistant. Set against that: Bass not as deep as others in the category, and sound quality overall is just okay.
Buy the Bogasing S8 Pro if the price matters more than sound quality. Buy the Sony ULT Field 5 if sound quality matters more than the price.
If sound quality matters at all to you, skip the Bogasing S8 Pro. It ranks near the bottom of the 78 large speakers, so look higher up the list instead.
There is a real battery-life gap here: the Sony ULT Field 5 is rated for 25 hours, the Bogasing S8 Pro only 15 hours.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Bogasing S8 Pro | Sony ULT Field 5 | |
|---|---|---|
| Price | $152 Discontinued | $198 |
| Ranked | #63 of 78 in Large Size Portable Bluetooth Speakers | #41 of 78 in Large Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Battery Life | 15 hours (Manufacturer specified) | 25 hours (Manufacturer specified) |
| IP Rating | IPX5 | IP67 |
| MicroSD Playback | Yes | - |
| Power Input | USB-C | USB-C |
| TWS | Yes | Yes |
| Weight | 3.4 lbs (1.55 kg) | 7.3 lbs (3.3 kg) |
| App | No | Yes |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| Built-in Microphone | Yes | Yes |
| EQ | No | Yes (App + ULT button) |
| Party Mode | No | Yes (Party Connect up to 100 speakers) |
| Power Bank | No | Yes (USB-C) |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Bluetooth Version | 5.0 | 5.3 |
| Dimensions | 10.7" x 2.1" x 2.9" (271 x 53 x 73 mm) | 12.6" x 5.7" x 4.9" (320 x 144 x 125 mm) |
| Frequency Response | 48Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 60W | 27W |
| Drivers | 60W: Dual drivers + passive radiator | 2x 46mm tweeters + 1x 79mm x 107mm woofer |
| Digital Aux Input | No | No |
| Discontinued | Yes | - |
Related Speaker Comparisons
How Sony ULT Field 5 compares with other leading options:
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- Tribit Stormbox Lava vs Sony ULT Field 5
- Minirig 4 with subwoofer vs Sony ULT Field 5
- Minirig 3 with subwoofer vs Sony ULT Field 5
- Minirig 2 with subwoofer vs Sony ULT Field 5
Prices on this page were last checked September 16, 2026 at 12:41 AM 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
Bogasing S8 Pro: $152 Discontinued eBay
Pros: A compact 1.55kg stereo speaker with aux and microSD playback, USB-C charging, IPX5 splash resistance and TWS pairing. The Vocal mode is the most restrained of its presets and gives voices the best chance of cutting through the mix.
Cons: Its sound modes are the limiting factor: most have large treble peaks that make cymbals and sibilants sound sizzling or harsh, while even Vocal mode is only moderately balanced. It has no app or EQ for a precise correction and is discontinued in favor of the S8 Pro Max. Discontinued.
Full Bogasing S8 Pro review and specifications →
| Amplifier Power | 60W |
|---|---|
| App | No |
| Aux Input | Yes |
| Battery Life | 15 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 10.7" x 2.1" x 2.9" (271 x 53 x 73 mm) |
| Discontinued | Yes |
| Drivers | 60W: Dual drivers + passive radiator |
| EQ | No |
| Frequency Response | 48Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX5 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 3.4 lbs (1.55 kg) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Sony ULT Field 5: $198 Amazon eBay
Pros: A tough 3.3kg portable with IP67 protection, LDAC/AAC support, aux input, a 10-band app EQ, Party Connect, USB-C power-bank output and a claimed 25-hour battery. Reviews find it energetic and dynamic with substantial bass, enough volume for a yard, and two ULT modes that let bass-focused listeners choose a deeper or punchier presentation.
Cons: It prioritizes bass and loudness over fidelity: reviews find the upper mids and highs subdued, with limited stereo separation and soundstage depth. Deep bass is less authoritative than the enclosure suggests, and the loud confirmation tone when pressing the ULT button is an unnecessary annoyance. Use the app EQ and audition it before buying for detail-focused music.
Full Sony ULT Field 5 review and specifications →
| Amplifier Power | 27W |
|---|---|
| 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 |
| 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 →
- Head-to-Head Comparisons
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- Sony ULT Field 5 vs JBL Xtreme 4
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- See all 48 comparisons