Short answer: the Ultimate Ears Megaboom 3. It ranks #95 of 151 medium speakers by sound quality, rated 3.0/5, at $111.63; the Ultimate Ears Boom 4 ranks #100, rated 2.9/5, and costs $149.99, which makes this an easy call rather than a real tradeoff.
Buy the Ultimate Ears Megaboom 3. It is rated higher for sound quality than the Ultimate Ears Boom 4 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Ultimate Ears Megaboom 3 | Ultimate Ears Boom 4 | |
|---|---|---|
| Price | $111.63 | $149.99 |
| Ranked | #95 of 151 in Medium Size Portable Bluetooth Speakers | #100 of 151 in Medium Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 70Hz | - |
| Battery Life | 20 hours (Manufacturer specified) | 15 hours (Manufacturer specified) |
| Maximum SPL | 98dB (measured by Alan Ross Reviews) | 85dBC (Manufacturer specified) |
| Party Mode | Yes (PartyUp up to 50 speakers) | - |
| Power Input | Micro USB | USB-C |
| Stereo | No | Yes |
| Omnidirectional | Yes | No |
| Weight | 2 lbs (925 g) | 1.4 lbs (620 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.2 | 5.1 |
| Drivers | 2x 50mm fullrange | 2x 1.57” (40mm) active drivers + 2x 1.81” x 2.57” (46.1 x 65.2mm) passive radiators |
| Dimensions | 3.4” x 8.9” x 3.4” (87 x 225 x 87 mm) | 7.2” x 2.9” x 2.9” (184 x 73 x 73 mm) |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | - |
| IP Rating | IPX7 | IP67 |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | SBC |
| App | Yes (UE | BOOM app) | Yes |
| Aux Input | No | No |
| EQ | Yes (App EQ) | Yes (via app) |
| TWS | Yes | Yes |
| Strap | Yes (built-in loop) | Yes (built-in loop) |
| Built-in Microphone | - | No |
| Power Bank | - | No |
Related Speaker Comparisons
More worthwhile head-to-heads for Ultimate Ears Megaboom 3:
- Earfun Uboom L vs Ultimate Ears Megaboom 3
- Soundcore Motion 300 vs Ultimate Ears Megaboom 3
- Soundcore Motion+ vs Ultimate Ears Megaboom 3
- Soundcore Boost “upgraded” 2021 vs Ultimate Ears Megaboom 3
- Minirig 4 vs Ultimate Ears Megaboom 3
Prices on this page were last checked October 2, 2026 at 10:18 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
Ultimate Ears Megaboom 3: $111.63 Amazon eBay
Newer model: the Ultimate Ears Megaboom 4, ranked lower, rated 2.1/5.
Pros: IP67 rated, floats, and survives drops from up to 1 meter. 20 hour battery life: about double most speakers this size. Measured bass extension of 70Hz (-10dB).
Cons: Not stereo, barely any bass. You can tell from the micro USB that they are just feeding you the same crap hardware over and over, this is inexcusable for a product released in 2018. Not technically a 360 speaker, only front and rear.
Full Ultimate Ears Megaboom 3 review and specifications →
| App | Yes (UE | BOOM app) |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 70Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Digital Aux Input | No |
| Dimensions | 3.4” x 8.9” x 3.4” (87 x 225 x 87 mm) |
| Drivers | 2x 50mm fullrange |
| EQ | Yes (App EQ) |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Maximum SPL | 98dB (measured by Alan Ross Reviews) |
| Omnidirectional | Yes |
| Party Mode | Yes (PartyUp up to 50 speakers) |
| Power Input | Micro USB |
| Stereo | No |
| Strap | Yes (built-in loop) |
| TWS | Yes |
| Weight | 2 lbs (925 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Ultimate Ears Megaboom 3 vs LG Xboom Grab
- Ultimate Ears Megaboom 3 vs Ultimate Ears Wonderboom 4
- Ultimate Ears Megaboom 3 vs Ultimate Ears Wonderboom 3
- Ultimate Ears Megaboom 3 vs Soundcore 2
- Ultimate Ears Megaboom 3 vs Ultimate Ears Wonderboom 2
- Ultimate Ears Megaboom 3 vs Tribit Stormbox 2
- Ultimate Ears Megaboom 3 vs Ultimate Ears Wonderboom
- Ultimate Ears Megaboom 3 vs Tribit Xsound Surf
- See all 89 comparisons
Ultimate Ears Boom 4: $149.99 Amazon eBay
Older model: the Ultimate Ears Boom 3 (ranked lower, rated 2.9/5).
Pros: IP67 rated, floats, and finally charges via USB-C instead of the older Booms’ Micro-USB. 15 hour battery. Customizable EQ and speaker-pairing via the UE app.
Cons: Not much improvement over the old ones. Weak bass extension and thuddy bass. Gets distorted above 90%
Full Ultimate Ears Boom 4 review and specifications →
| App | Yes |
|---|---|
| Aux Input | No |
| Battery Life | 15 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.1 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 7.2” x 2.9” x 2.9” (184 x 73 x 73 mm) |
| Drivers | 2x 1.57” (40mm) active drivers + 2x 1.81” x 2.57” (46.1 x 65.2mm) passive radiators |
| EQ | Yes (via app) |
| IP Rating | IP67 |
| Maximum SPL | 85dBC (Manufacturer specified) |
| Omnidirectional | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (built-in loop) |
| TWS | Yes |
| Weight | 1.4 lbs (620 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Ultimate Ears Boom 4 vs Ultimate Ears Boom 3
- Ultimate Ears Boom 4 vs Ultimate Ears Wonderboom
- Ultimate Ears Boom 4 vs Klipsch Groove/Heritage Groove
- Ultimate Ears Boom 4 vs Ultimate Ears Wonderboom 2
- Ultimate Ears Boom 4 vs Ultimate Ears Wonderboom 3
- Ultimate Ears Boom 4 vs DBSONO X-Blast F37
- Ultimate Ears Boom 4 vs Ultimate Ears Wonderboom 4
- Ultimate Ears Boom 4 vs Sony SRS-XE300
- See all 133 comparisons