Ultimate Ears Boom 4 vs Soundcore Boom 2
Buy the Soundcore Boom 2 if you want loud, bass-heavy outdoor sound and longer playtime per charge. Buy the UE Boom 4 if you want a smaller, lighter speaker that is easier to carry and has a more balanced 360-degree sound. The Boom 4 has sold as low as $65.00 (on 2026-11-06) and as high as $114.99 (on 2026-10-30); the Boom 2 is the bigger, more powerful speaker and usually costs more.
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Choose the UE Boom 4 if you want a light 620 g speaker that fits in a bag and plays balanced 360-degree sound.
- Light at 620 g and easy to carry in a bag.
- Balanced 360-degree sound from two 4 in drivers.
- Alexa built in, no phone needed for voice commands.
- Waterproof and rated 4.6 out of 5 from 411 ratings.
What separates them
| Ultimate Ears Boom 4 | Soundcore Boom 2 | |
|---|---|---|
| Max output power | 10 W | 80 W max (60 W nominal) |
| Driver setup | Two 4 in drivers with passive radiators, 360-degree sound | 50W racetrack subwoofer plus dual 15W tweeters, side-firing |
| Low-frequency response | 60 Hz | 45 Hz |
| Weight | 620 g | 1.66 kg |
| Waterproof rating | Waterproof (IP67) | IPX7 |
| Bluetooth version | Bluetooth (version not listed) | Bluetooth 5.3 |
| Speaker pairing | PartyUp with other UE speakers | PartyCast 2.0, up to 100+ speakers |
| Voice assistant |
Price history
- Ultimate Ears Boom 4: lowest $65.00 on Nov 6 at Secondipity.
- Soundcore Boom 2: lowest $79.99 on Nov 6 at Walmart.
Prices at every store
Ultimate Ears Boom 4
- Best BuyCheck price at Best Buy
- B&H Photo-Video-AudioCheck price at B&H Photo-Video-Audio
- WalmartCheck price at Walmart
Soundcore Boom 2
- AmazonCheck price at Amazon
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Specs compared
| Spec | Ultimate Ears Boom 4 | Soundcore Boom 2 |
|---|---|---|
| Outdoor | Yes | Yes |
| Frequency Response | 60 - 20000 Hz | 45 20000 -- Hz |
| Bluetooth | Yes | Yes, Bluetooth, Bluetooth 5.3 |
| Connectivity Technology | Wireless, Bluetooth | Bluetooth |
| Ports And Interfaces | USB Type-C | USB-C |
| Assistant Support | Alexa | Voice assistant (paired device's), No |
| Speaker Placement | Portable | Portable |
| Design Highlights | Portable | Portable |
| Material | Plastic | Plastic |
| Style | Cylinder | Modern boombox |
What reviewers say
Ultimate Ears Boom 4
- 4.6 / 5411 ratings
Rated 4.6 out of 5 from 411 ratings, the Boom 4 is well received overall. Owners like the rugged waterproof design and the even 360-degree sound. Complaints center on weight and volume limits.
- SoundPraisedOwners say the 360-degree output sounds even from any position in the room.
- DurabilityPraisedReviewers report it survives splashes, rain and drops outdoors.
Questions and answers
- Which is better for outdoor parties?
- The Soundcore Boom 2. Its 80W output and 50W subwoofer play much louder with deeper bass than the 10W Boom 4. Both are waterproof.
- Which is easier to carry?
- The UE Boom 4. It weighs 620 g against 1.66 kg for the Boom 2 and has a slim cylinder shape that fits in a bottle pocket.
- Does the Boom 4 have better bass?
- No. The Boom 4 reaches down to 60 Hz; the Boom 2 reaches 45 Hz with a dedicated racetrack subwoofer.
- Is the Boom 2 worth the extra money?
- If you need volume and bass outdoors, yes. If you mainly want a light speaker for casual listening, the Boom 4 covers that at a lower price.
- Can I pair several of them together?
- Yes on both. The Boom 4 uses UE PartyUp; the Boom 2 uses PartyCast 2.0 and can link 100+ speakers.
- Which has voice control?
- The Boom 4 has Alexa built in. The Boom 2 uses the voice assistant on your paired phone.