Short answer: the Bogasing S8 Pro Max. It ranks #24 of 85 large speakers by sound quality, rated 4.2/5, at $123.49; the Sony ULT Field 5 ranks #46, rated 3.5/5, and costs $348, which makes this an easy call rather than a real tradeoff.
Why pick the Bogasing S8 Pro Max: A true three way stereo design in an aluminium body: a 70mm woofer, two 52mm midrange drivers and two 31mm silk tweeters angled outward, backed by two 80mm passive radiators. The catch: Its tuning is bright: the 3D mode pushes the mids and treble hard, can sound sharp or tiring at higher volumes, and sometimes adds an echo effect to vocals.
The case for the Sony ULT Field 5: 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. The catch: It prioritizes bass and loudness over fidelity: reviews find the upper mids and highs subdued, with limited stereo separation and soundstage depth.
Buy the Bogasing S8 Pro Max. It is rated higher for sound quality than the Sony ULT Field 5 and costs less, so only choose the other one for a particular feature it does better.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Bogasing S8 Pro Max | Sony ULT Field 5 | |
|---|---|---|
| Price | $123.49 | $348.00 |
| Ranked | #24 of 85 in Large Size Portable Bluetooth Speakers | #46 of 85 in Large Size Portable Bluetooth Speakers |
| Drivers | 70mm woofer + 2x 52mm midrange + 2x 31mm silk tweeters + 2x 80mm passive radiators | 2x 46mm tweeters + 1x 79mm x 107mm woofer |
| Amplifier Power | 100W (40W woofer, 2x 20W midrange, 2x 10W tweeters) | 27W |
| Dimensions | 4.3”H x 11.1”W x 2.6”D (110 x 281 x 65 mm) | 12.6” x 5.7” x 4.9” (320 x 144 x 125 mm) |
| Weight | 3.4 lbs (1.55 kg) | 7.3 lbs (3.3 kg) |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| App | No | Yes |
| EQ | No | Yes (App + ULT button) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.3 |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| Aux Input | Yes | Yes |
| Digital Aux Input | No | No |
| MicroSD Playback | Yes | - |
| USB Playback | Yes | - |
| Built-in Microphone | Yes | Yes |
| Battery Life | - | 25 hours (Manufacturer specified) |
| IP Rating | - | IP67 |
| Party Mode | - | Yes (Party Connect up to 100 speakers) |
| Power Bank | - | Yes (USB-C) |
| Power Input | - | USB-C |
| Strap | - | Yes (detachable shoulder strap) |
Related Speaker Comparisons
More worthwhile head-to-heads for Bogasing S8 Pro Max:
- JBL Xtreme 5 vs Bogasing S8 Pro Max
- Tribit Stormbox Lava vs Bogasing S8 Pro Max
- Soundcore Boom 2 vs Bogasing S8 Pro Max
- Bose SoundLink Max vs Bogasing S8 Pro Max
- JBL Xtreme 3 vs Bogasing S8 Pro Max
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
Bogasing S8 Pro Max: $123.49 Amazon eBay
Older model: the Bogasing S8 Pro (ranked lower, rated 2.7/5).
Pros: A true three way stereo design in an aluminium body: a 70mm woofer, two 52mm midrange drivers and two 31mm silk tweeters angled outward, backed by two 80mm passive radiators. Its 3D mode throws a noticeably wider soundstage than mono rivals like the Bose SoundLink Plus and JBL Charge 5, and in side by side listening it came across as fuller, punchier and more detailed than both the Charge 5 and the Soundcore Motion X600. Unlike many portables it stays clean at full volume without audible compression or distortion, where the Bose SoundLink Max, Marshall Middleton and Loewe We Hear Pro all strained. Vocal mode is the most neutral preset. Plays FLAC and other lossless files from USB drives and microSD cards, has an aux input and a built-in mic, and two units pair for stereo.
Cons: Its tuning is bright: the 3D mode pushes the mids and treble hard, can sound sharp or tiring at higher volumes, and sometimes adds an echo effect to vocals. Bass is punchy but not especially deep, and the Tribit StormBox Lava, Harman Kardon Go + Play 3 and Loewe We Hear Pro all deliver warmer, fuller low end at moderate volume; the Sony ULT Field 5 also sounded richer at moderate levels. Bass mode is its quietest preset rather than its fullest. There is no app or adjustable EQ, only three fixed sound modes.
Full Bogasing S8 Pro Max review and specifications →
| Amplifier Power | 100W (40W woofer, 2x 20W midrange, 2x 10W tweeters) |
|---|---|
| App | No |
| Aux Input | Yes |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 4.3”H x 11.1”W x 2.6”D (110 x 281 x 65 mm) |
| Drivers | 70mm woofer + 2x 52mm midrange + 2x 31mm silk tweeters + 2x 80mm passive radiators |
| EQ | No |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 3.4 lbs (1.55 kg) |
- Reviews, Comparisons and Sound Samples
- Mateusz Cholewa: BOGASING S8 Pro Max 100W vs JBL Xtreme 4 Audio Test More from Mateusz Cholewa →
- Mateusz Cholewa: BOGASING S8 Pro Max 100W vs BOSE Soundlink MAX
- Mateusz Cholewa: BOGASING S8 Pro MAX KILLER? vs Soundcore Motion X600
- Mateusz Cholewa: JBL Charge 5 vs BOGASING S8 Pro MAX
- Mateusz Cholewa: BOGASING S8 Pro Max „HiFi” vs Harman Kardon Go Play 3 „HiFi”
- Mateusz Cholewa: LOEWE We Hear Pro Super Stereo vs HiFi BOGASING S8 Pro MAX
- Mateusz Cholewa: BOGASING S8 Pro MAX HiFi? vs MARSHALL MIDDLETON
- Mateusz Cholewa: TRIBIT StormBox LAVA Deep Bass vs Bogasing S8 Pro MAX - HiFi?
- Mateusz Cholewa: SONY ULT Field 5 vs BOGASING S8 PRO MAX
- Dominik Reviews: Bose Soundlink Plus vs Bogasing S8 Pro Max - 3D vs Mono! More from Dominik Reviews →
- Mateusz Cholewa: LG XBOOM Bounce vs BOGASING S8 Pro Max
- Head-to-Head Comparisons
- Bogasing S8 Pro Max vs Bose SoundLink Plus
- Bogasing S8 Pro Max vs Teufel Rockster Cross
- Bogasing S8 Pro Max vs Soundcore Rave Neo 2
- Bogasing S8 Pro Max vs Soundcore Motion X500
- Bogasing S8 Pro Max vs Soundcore Motion X600
- Bogasing S8 Pro Max vs JBL Xtreme 3
- Bogasing S8 Pro Max vs Bose SoundLink Max
- Bogasing S8 Pro Max vs Marshall Middleton II
- See all 14 comparisons
Sony ULT Field 5: $348.00 Amazon eBay
Older models: the Sony SRS-XB43 (ranked lower, rated 3.5/5) and the Sony SRS-XG300 (ranked lower, rated 3.1/5).
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 | Yes |
| 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 |
| Strap | Yes (detachable shoulder strap) |
| 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 →
- Mateusz Cholewa: SONY ULT Field 5 vs BOGASING S8 PRO MAX More from Mateusz Cholewa →
- Head-to-Head Comparisons