Soundcore Motion 300 vs Ultimate Ears Megaboom 4

Last updated: October 12, 2026

Short answer: the Soundcore Motion 300 is the sound-first choice once tuned, while the larger Megaboom 4 makes its case with durability, runtime, and PartyUp. The two place 3 of 175 and 170 of 175 in their respective rankings.

Soundcore Motion 300 vs Ultimate Ears Megaboom 4

The Motion 300 can work facing forward or lying flat and remembers custom EQ for each orientation. Its bass reaches deeply for this compact class, but its stock top end is too subdued and it is best in Signature rather than BassUp.

The Megaboom 4 floats, is IP67 rated, charges through USB-C, lasts up to 20 hours, and joins PartyUp groups. Those conveniences do not overcome its soft treble, modest loudness, and high-volume distortion.

Buy the Soundcore Motion 300 if you care most about tuned sound quality and compact size.

Buy the Ultimate Ears Megaboom 4 if you need a floating speaker with longer battery life and PartyUp support.

If battery life is a priority, the Ultimate Ears Megaboom 4 is rated for 20 hours versus 13 hours for the Soundcore Motion 300.

Looking for alternatives? See the complete Portable Bluetooth rankings.

Specifications Side By Side

Soundcore Motion 300 Ultimate Ears Megaboom 4
Price$79.99$200
Ranked#3 of 175 in Medium Size Portable Bluetooth Speakers#170 of 175 in Medium Size Portable Bluetooth Speakers
AppYesYes
Aux InputNoNo
Bass Extension (-10dB)50Hz-
Battery Life13 hours (Manufacturer specified)20 hours (Manufacturer specified)
BluetoothYesYes
Bluetooth CodecsAAC, LDAC, SBCSBC
Built-in MicrophoneYesNo
EQYes (9 band with adjustable frequency)Yes (via app)
IP RatingIPX7IP67
Bluetooth Latency216ms ldac, 200ms aac, 116ms sbc-
Maximum SPL101dB (measured by Alan Ross Reviews)91dB (Manufacturer specified)
Power BankNo-
StereoYesNo
OmnidirectionalPointing upYes
TWSYesYes
Weight1.7 lbs (772 g)2.4 lbs (1.1 kg)
Bluetooth Version5.35.1
Dimensions7.9” x 3.6” x 2” (200 x 92 x 50 mm)3.4” x 3.4” x 8.9” (87 x 87 x 225 mm)
Drivers2x 50.8mm (2”) full-range drivers + 2x passive radiators2x 50x50mm full-range + 2x 55x86mm passive radiators
Frequency Response65Hz - 40kHz (Manufacturer specified)-
Power InputUSB-CUSB-C
Amplifier Power30W-
Party ModeYes (PartyCast up to 100 speakers)Yes (PartyUp up to 50 speakers)
Digital Aux InputNoNo
Strap-Yes (built-in loop)

More top alternatives to Soundcore Motion 300:

Prices on this page were last checked October 12, 2026 at 4:13 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 $79.99 eBay

Soundcore Motion 300 ranking card

Older model: the Soundcore Motion+ (ranked lower, rated 4.4/5). See every Soundcore Motion generation.

Same family: the Soundcore Motion 100 (smaller model, ranked lower, rated 3.7/5), the Soundcore Motion X500 (larger model, rated 4.1/5) and the Soundcore Motion X600 (larger model, rated 4.3/5).

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. Measured bass extension of 50Hz (-10dB).

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.

ReleasedOct 2023 (3 years ago)
Amplifier Power30W
AppYes
Aux InputNo
Bass Extension (-10dB)50Hz
Battery Life13 hours (Manufacturer specified)
BluetoothYes
Bluetooth CodecsAAC, LDAC, SBC
Bluetooth Latency216ms ldac, 200ms aac, 116ms sbc
Bluetooth Version5.3
Built-in MicrophoneYes
Digital Aux InputNo
Dimensions7.9” x 3.6” x 2” (200 x 92 x 50 mm)
Drivers2x 50.8mm (2”) full-range drivers + 2x passive radiators
EQYes (9 band with adjustable frequency)
Frequency Response65Hz - 40kHz (Manufacturer specified)
IP RatingIPX7
Maximum SPL101dB (measured by Alan Ross Reviews)
OmnidirectionalPointing up
Party ModeYes (PartyCast up to 100 speakers)
Power BankNo
Power InputUSB-C
StereoYes
TWSYes
Weight1.7 lbs (772 g)

Ultimate Ears Megaboom 4: $200 Amazon $200 eBay

Ultimate Ears Megaboom 4 ranking card

Older model: the Ultimate Ears Megaboom 3 (ranked higher, rated 3/5). See every Ultimate Ears Wonderboom, Boom and Megaboom generation.

Same family: the Ultimate Ears Wonderboom 4 (smaller model, ranked higher, rated 2.9/5) and the Ultimate Ears Boom 4 (smaller model, ranked higher, rated 2.9/5).

Pros: IP67 rated, floats, and finally uses USB-C charging. 20 hour battery life. ‘PartyUp’ feature syncs multiple UE speakers together.

Cons: A lot of distortion at higher volumes. Rolled off treble. Not very loud. They really screwed this up

ReleasedJun 2024 (2 years ago)
AppYes
Aux InputNo
Battery Life20 hours (Manufacturer specified)
BluetoothYes
Bluetooth CodecsSBC
Bluetooth Version5.1
Built-in MicrophoneNo
Digital Aux InputNo
Dimensions3.4” x 3.4” x 8.9” (87 x 87 x 225 mm)
Drivers2x 50x50mm full-range + 2x 55x86mm passive radiators
EQYes (via app)
IP RatingIP67
Maximum SPL91dB (Manufacturer specified)
OmnidirectionalYes
Party ModeYes (PartyUp up to 50 speakers)
Power InputUSB-C
StereoNo
StrapYes (built-in loop)
TWSYes
Weight2.4 lbs (1.1 kg)