Short answer: the Soundcore Motion 300. It ranks #2 of 136 medium speakers by sound quality at $79.99; the Ultimate Ears Megaboom 3 ranks #83 and costs $163, so there is little reason to consider the other one.
What the Soundcore Motion 300 offers: Pretty deep bass for the small size. Pocket size in a big pocket. Can be used in stereo facing you, or omnidirectional lying down. Ability to have a custom EQ for each orientation, standing, lying flat, hanging. Try the Uboom L EQs from Oluv for a more neutral sound. Watch for: Without the above EQ or turning the top 2 treble EQ bars to max, this speaker is very rolled off in the treble and will rank around #50 in the rankings. Bassup mode is worse than Signature. Not quite as detailed or neutral as higher ranked speakers. Slight bass distortion when turned up.
What the Ultimate Ears Megaboom 3 offers: IP67 rated, floats, and survives drops from up to 1 meter. 20 hour battery life - about double most speakers this size. Watch for: 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.
Buy the Soundcore Motion 300. It ranks higher for sound quality than the Ultimate Ears Megaboom 3 and costs less, so there is no real case for the other one.
If battery life is a priority, the Ultimate Ears Megaboom 3 is rated for 20 hours versus 13 hours for the Soundcore Motion 300.
Specifications Side By Side
| Soundcore Motion 300 | Ultimate Ears Megaboom 3 | |
|---|---|---|
| Price | $79.99 | $163 |
| Ranked | #2 of 136 in Medium Size Portable Bluetooth Speakers | #83 of 136 in Medium Size Portable Bluetooth Speakers |
| App | Yes | - |
| Aux Input | No | - |
| Bass Extension (-10dB) | 50Hz | 70Hz |
| Battery Life | 13 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| Bluetooth Codecs | LDAC, SBC | - |
| Built in Microphone | Yes | - |
| EQ | Yes (9 band with adjustable frequency) | - |
| IP Rating | IPX7 | IPX7 |
| Bluetooth Latency | 216ms ldac, 200ms aac, 116ms sbc | - |
| Max Volume | 101dB | 98dB |
| Power Bank | No | - |
| Stereo | Yes | No |
| Omnidirectional | Pointing up | Yes |
| TWS | Yes | - |
| Weight | 1.7 lbs / 772 g | 2 lbs / 925 g |
| Bluetooth Version | 5.3 | 4.2 |
| Dimensions | 7.9" x 3.6" x 2" (200 x 92 x 50 mm) | 3.4" x 8.9" x 3.4" (87 x 225 x 87 mm) |
| Drivers | 2x 50.8mm (2") full-range drivers + 2x passive radiators | 2x 50mm fullrange |
| Frequency Response | 65Hz - 40kHz (Manufacturer specified) | 60Hz - 20kHz (Manufacturer specified) |
| Power Input | USB-C | Micro USB |
| Output Power | 30W | - |
| Party Mode | Yes (PartyCast up to 100 speakers) | Yes (PartyUp up to 50 speakers) |
| Digital Aux Input | No | No |
Related Speaker Comparisons
More useful head-to-heads from the same speaker class:
- Bose Soundlink Mini 2 vs Ultimate Ears Wonderboom 4
- Soundcore Motion+ vs Marshall Emberton III
- Soundcore Motion+ vs Marshall Emberton II
- Soundcore Motion+ vs Ultimate Ears Megaboom 3
- Tribit Maxsound Plus V1/V2/Thunderbox Plus vs Ultimate Ears Megaboom 3
Prices on this page were last checked August 27, 2026 at 10:09 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
Soundcore Motion 300: $79.99 Amazon eBay
Pros: Pretty deep bass for the small size. Pocket size in a big pocket. Can be used in stereo facing you, or omnidirectional lying down. Ability to have a custom EQ for each orientation, standing, lying flat, hanging. Try the Uboom L EQs from Oluv for a more neutral sound.
Cons: Without the above EQ or turning the top 2 treble EQ bars to max, this speaker is very rolled off in the treble and will rank around #50 in the rankings. Bassup mode is worse than Signature. Not quite as detailed or neutral as higher ranked speakers. Slight bass distortion when turned up.
Full Soundcore Motion 300 review and specifications →
| App | Yes |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 50Hz |
| Battery Life | 13 hours (Manufacturer specified) |
| Bluetooth Codecs | LDAC, SBC |
| Bluetooth Latency | 216ms ldac, 200ms aac, 116ms sbc |
| Bluetooth Version | 5.3 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 7.9" x 3.6" x 2" (200 x 92 x 50 mm) |
| Drivers | 2x 50.8mm (2") full-range drivers + 2x passive radiators |
| EQ | Yes (9 band with adjustable frequency) |
| Frequency Response | 65Hz - 40kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Max Volume | 101dB |
| Omnidirectional | Pointing up |
| Output Power | 30W |
| Party Mode | Yes (PartyCast up to 100 speakers) |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.7 lbs / 772 g |
- Links
- Reviews, Comparisons and Sound Samples
- Joy & Oluv’Sone: Bose Soundlink Flex 2nd gen & Soundcore Motion 300 sound test More from Oluv’Sone →
- Alan Ross Reviews: Travel Speakers! Soundcore Motion 300 or Bose Flex or Tribit Stormbow Flow More from alanrossreviews →
- Alan Ross Reviews: Soundcore Motion 300 or JBL Flip 6 or Soundcore Boost v2? we all have issues!
- Jay’s Straight Up Reviews & More: On A Ledge 🪟 Soundcore Motion 300 vs Tozo PA1 ⚒ Battle of the Budget Handheld Bluetooth Speakers More from JaysStraightUpReviews →
- Jay’s Straight Up Reviews & More: Tribit Stormbox Flow vs Soundcore Motion 300 (LDAC) 😵 Budget Bose Soundlink Flex “Inspired” Speakers
- Oluv Patreon: Soundcore Motion 300 = Bose Soundlink Flex = Earfun UBoom L?
- Oluv Patreon: SoundCore Motion 300 vs VIFA Helsinki
- Oluv Patreon: (Anker) Soundcore Motion 300 - first impressions
- New Stuff TV 2: Sony ULT Field 1 vs JBL Flip 6, JBL Charge 5 & Soundcore Motion 300
- Storytripper HD: Klipsch Nashville vs Harman Kardon Luna vs Soundcore Motion 300 More from storytripperhd →
- Reddit Search for Soundcore Motion 300 Review
- Head-to-Head Comparisons
- Soundcore Motion 300 vs Earfun Uboom L
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- Soundcore Motion 300 vs Soundcore Boost “upgraded” 2021
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- Soundcore Motion 300 vs B&O Beosound A1 2nd gen
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- See all 91 comparisons
Ultimate Ears Megaboom 3: $163 Amazon eBay
Pros: IP67 rated, floats, and survives drops from up to 1 meter. 20 hour battery life - about double most speakers this size.
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 →
| Bass Extension (-10dB) | 70Hz |
|---|---|
| Battery Life | 20 hours (Manufacturer specified) |
| 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 |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Max Volume | 98dB |
| Omnidirectional | Yes |
| Party Mode | Yes (PartyUp up to 50 speakers) |
| Power Input | Micro USB |
| Stereo | No |
| Weight | 2 lbs / 925 g |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Ultimate Ears Megaboom 3 vs LG Xboom Grab
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- Ultimate Ears Megaboom 3 vs Soundcore 2
- Ultimate Ears Megaboom 3 vs Ultimate Ears Wonderboom 2
- Ultimate Ears Megaboom 3 vs Tribit Stormbox 2
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- See all 74 comparisons