Short answer: the Boom 2, and it’s much cheaper too. It ranks #10 of 76 large speakers at $89.99; the ULT Field 5 ranks #40 at $198, $108 more.
Our own cons entry for the ULT Field 5 doesn’t oversell it. Bass not as deep as others in the category, sound quality that’s just okay overall, and a ULT button that makes a really loud tone when pressed. It does offer IP67 rating, a 25-hour battery, and a 10-band app EQ.
The Boom 2 needs a corrected EQ to hit its ranked potential, moving from around #24 on stock tuning to its actual #10 placement once Oluv’s or Alan Ross’s EQ is applied, with a single midrange driver as its structural limitation.
Buy the Boom 2 for the far better value once EQ’d. Buy the ULT Field 5 if Sony’s feature set specifically matters to you.
Specifications Side By Side
| Sony ULT Field 5 | Soundcore Boom 2 | |
|---|---|---|
| Price | $198 | $89.99 |
| Ranked | #40 of 75 in Large Size Portable Bluetooth Speakers | #10 of 75 in Large Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | Yes | No |
| Battery Life | 25 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC |
| Bluetooth Version | 5.3 | 5.3 |
| Built in Microphone | Yes | No |
| Dimensions | 12.6" x 5.67" x 4.92" (320 x 144 x 125 mm) | 11.7" x 7.3" x 4.0" (297 x 185 x 102 mm) |
| Drivers | 2x 46mm tweeters + 1x 79mm x 107mm woofer | 120mm x 90mm woofer, 2x 20mm tweeters |
| EQ | Yes (App + ULT button) | Yes |
| IP Rating | IP67 | IPX7 |
| Party Mode | Yes (Party Connect up to 100 speakers) | Yes (PartyCast 2.0 up to 100 speakers) |
| Power Bank | Yes | Yes |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Partially (1 woofer) |
| TWS | Yes | Yes |
| Weight | 7.3 lbs / 3.3 kg | 3.7 lbs / 1.68 kg |
| Output Power | 27W | 80W |
| Bass Extension (-10dB) | - | 47Hz |
| Bluetooth Latency | - | 125ms |
| Max Volume | - | 105dB |
| MicroSD Playback | - | No |
| Frequency Response | - | 45Hz - 20kHz (Manufacturer specified) |
The Two Speakers In Full
Sony ULT Field 5: $198 Amazon
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.
| App | Yes |
|---|---|
| Aux Input | Yes |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.3 |
| Built in Microphone | Yes |
| Dimensions | 12.6" x 5.67" x 4.92" (320 x 144 x 125 mm) |
| Drivers | 2x 46mm tweeters + 1x 79mm x 107mm woofer |
| EQ | Yes (App + ULT button) |
| IP Rating | IP67 |
| Output Power | 27W |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 7.3 lbs / 3.3 kg |
- Reviews, Comparisons and Sound Samples
- Danny Pops: Don’t TOUCH that ULT Button! Sony ULT Field 5 Review
- 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?
- Joy & Oluv’Sone: Sony ULT Field 5 vs Anker SoundCore Boom 2 - listening test
- Head-to-Head Comparisons
- Links
Soundcore Boom 2: $89.99 Amazon Bhphotovideo
Pros: Pretty deep bass for the size. Cool lights in the side passive radiators. For the best sound quality use Oluv’s EQ or Alan Ross’s EQ. With the stock tuning, this speaker would rank around #24, due to the boosted bass and rising treble.
Cons: Only a single midrange driver, so you only get stereo for the tweeters. Sound processing issues with inconsistent bass notes that disappear at low levels like the Soundcore Boom and Soundcore Boost, not great for listening at low levels. Quite bass heavy with BassUp turned on, I’d recommend turning it off. A little bit of a bright tuning in the treble, about +5db.
| App | Yes |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 47Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 125ms |
| Bluetooth Version | 5.3 |
| Built in Microphone | No |
| Dimensions | 11.7" x 7.3" x 4.0" (297 x 185 x 102 mm) |
| Drivers | 120mm x 90mm woofer, 2x 20mm tweeters |
| EQ | Yes |
| Frequency Response | 45Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Max Volume | 105dB |
| MicroSD Playback | No |
| Output Power | 80W |
| Party Mode | Yes (PartyCast 2.0 up to 100 speakers) |
| Power Bank | Yes |
| Power Input | USB-C |
| Stereo | Partially (1 woofer) |
| TWS | Yes |
| Weight | 3.7 lbs / 1.68 kg |
- Reviews, Comparisons and Sound Samples
- JOY‘s 3D Audio Show: Tribit StormBox Lava vs SoundCore Boom 2 - sound quality demo
- JOY‘s 🎧3D🔈Audio-Show: JBL Charge 6 vs SoundCore Boom 2 - David vs Goliath
- Mateusz Cholewa: TRIBIT StormBox LAVA vs Soundcore BOOM 2
- Joy & Oluv’Sone: Bose SoundLink Max & SoundCore Boom 2 - indoor soundtest
- Joy & Oluv’Sone: Bose SoundLink Max & SoundCore Boom 2 - outdoor soundtest
- Joy & Oluv’Sone: Best portable speakers 2025 - get the best bang for your buck $$$
- Oluv Patreon: SoundCore Boom 3i - first impressions & EQs
- Alan Ross Reviews: Ultimate Soundcore Boom 2 Review - Is It Worth The Hype?
- Oluv Patreon: Anker Soundcore Boom 2 - first impressions
- Jay’s Straight Up Reviews & More: Soundcore Boom 2 💣vs Mifa Wildbox 🪇 Basement Battle of the Bluetooth Boombox Welterweights ⚖️
- Jay’s Straight Up Reviews & More: New Release! Soundcore Boom 2 😯 Bluetooth Boombox Speaker 🔊 Unboxing, First Look & Sound Demo
- CEONTHEMAKING: Soundcore Boom 2 - HANDS DOWN The Best Speaker Under $150!
- Josh’s Gadgets and More: Budget Monster ZZA K8 vs Soundcore Boom 2
- Joy & Oluv’Sone: JBL, Bose, B&O, Sonos, Earfun, SoundCore… which portable speaker sounds best?
- Joy & Oluv’Sone: Sony ULT Field 5 vs Anker SoundCore Boom 2 - listening test
- Head-to-Head Comparisons
- Links
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC 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.