EarFun UBoom L vs Soundcore Motion 300 (August 2026)

This is the top of the medium class: #1 against #2 out of 133 speakers. Either is an excellent buy, and the choice comes down to whether you will open an app.

The UBoom L is the more neutral speaker, and it is neutral without you doing anything. It was tuned by Oluv and is arguably the most accurate modern Bluetooth speaker at any price, with the unusual property of sounding correct at every volume level — most speakers need a different EQ as you turn them up, because it compensates for the equal-loudness contour. It also costs $50, which is less than the Motion 300.

The Motion 300 depends on its EQ. Stock, it is heavily rolled off in the treble and would rank around #50. Corrected, it is #2 and reaches deeper than the UBoom L, 50 Hz against 56 Hz, and supports LDAC.

Practical differences that may decide it:

Aux input: the UBoom L has one, the Motion 300 does not. Note the UBoom L’s aux is high-latency and not suited to video.
Battery: 16 hours against 13.
Weight: 650 g against 772 g.
Water resistance: IP67 against IPX7 — the UBoom L also resists dust.
Latency: the UBoom L’s default is 400 ms unless you enable low-latency mode, which does not work while two are TWS paired. If you watch a lot of video on a paired stereo pair, that is a genuine mark against it.

Buy the UBoom L for the best sound out of the box, the lower price, aux input and longer battery. It is the default recommendation in this class.

Buy the Motion 300 if you want deeper bass and LDAC, will load an EQ preset, and don’t need aux.

Last updated: August 07, 2026

Specifications Side By Side

	Earfun Uboom L	Soundcore Motion 300
Price	$50 after coupon UBOOMLWC	$79.99
Ranked	#1 of 133 in Medium Size Portable Bluetooth Speakers	#2 of 133 in Medium Size Portable Bluetooth Speakers
App	Yes (firmware >= 1.2.6)	Yes
Aux Input	Yes	No
Aux Latency	216ms	—
Bass Extension (-10dB)	56Hz	50Hz
Battery Life	16 hours (Manufacturer specified)	13 hours (Manufacturer specified)
Bluetooth Codecs	AAC, SBC	LDAC, SBC
Built in Microphone	Yes	Yes
EQ	Yes (10 band, firmware >= 1.2.6)	Yes (9 band with adjustable frequency)
IP Rating	IP67	IPX7
Bluetooth Latency	400ms normal / 66ms low latency mode	216ms ldac, 200ms aac, 116ms sbc
Max Volume	103dB	101dB
Party Mode	No	—
Power Bank	No	No
Power Input	USB-C	USB-C
Stereo	Yes	Yes
TWS	Yes	Yes
Weight	1.4 lbs / 650 g	1.7 lbs / 772 g
Bluetooth Version	5.0	5.3
Dimensions	3.1" x 8.3" x 2.8" (78 x 210 x 72 mm)	7.9" x 3.6" x 2.0" (200 x 92 x 50 mm)
Driver	2x 55mm drivers + 2x passive radiators	2x 50.8mm (2") full-range drivers + 2x passive radiators
Output Power	28W	30W
Frequency Response	—	65Hz - 40kHz (Manufacturer specified)

The Two Speakers In Full

Earfun Uboom L: $50 after coupon UBOOMLWC Amazon Myearfun

Pros: Tuned by Oluv and he knocked it out of the park. The audiophile choice. Extremely neutral, possibly the best of any modern Bluetooth speaker slightly behind the Vifa Helsinki. This is the only speaker that sounds correct at every volume level. Other speakers will need a different EQ at each volume level. For maximum volume without distortion use max volume - 1 step for most songs. Oluv left another higher volume for songs that are quiet. Amazing sounding at low levels as it boosts bass and treble at low levels to account for the equal-loudness contour.

Cons: Latency is high (400ms) without turning on low latency mode (66ms) which doesn’t work when two speakers are TWS paired. Low latency mode can be turned on by pressing the Bluetooth button twice. If latency in TWS paired mode is a very important feature, like if you watch a lot of video, you may want to choose another speaker. The power button can sometimes get accidentally pressed when put in a bag. The aux input has quite a bit of latency and isn’t recommended for video use.

Setup: Try setting up the Earfun App (Android or iOS) to see if that works. If not, you’ll need to flash firmware 1.2.7 to work with the app and set with Oluv’s EQ in the Earfun app which sounds the best. The instructions say that you need a USB3 cable, but most USB2 cables work just fine, try the one included with your phone. Check the current firmware version by turning it on, then pressing the power and Bluetooth buttons at the same time. To flash, turn the speaker off then hold down the Bluetooth button while plugging in the cable. To flash on a mac, see these instructions. In TWS mode, long press the outdoor button for 2 seconds to change TWS to Party mode and back.

App	Yes (firmware >= 1.2.6)
Aux Input	Yes
Aux Latency	216ms
Bass Extension (-10dB)	56Hz
Battery Life	16 hours (Manufacturer specified)
Bluetooth Codecs	AAC, SBC
Bluetooth Latency	400ms normal / 66ms low latency mode
Bluetooth Version	5.0
Built in Microphone	Yes
Dimensions	3.1" x 8.3" x 2.8" (78 x 210 x 72 mm)
Driver	2x 55mm drivers + 2x passive radiators
EQ	Yes (10 band, firmware >= 1.2.6)
IP Rating	IP67
Max Volume	103dB
Output Power	28W
Party Mode	No
Power Bank	No
Power Input	USB-C
Stereo	Yes
TWS	Yes
Weight	1.4 lbs / 650 g

Check current price at Amazon ($50) →Check current price at Myearfun →

Soundcore Motion 300: $79.99 Amazon

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.

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
Dimensions	7.9" x 3.6" x 2.0" (200 x 92 x 50 mm)
Driver	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
Output Power	30W
Power Bank	No
Power Input	USB-C
Stereo	Yes
TWS	Yes
Weight	1.7 lbs / 772 g

Check current price at Amazon ($79.99) →

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Product prices and availability were last checked August 7, 2026 at 5:43 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.