Earfun Uboom L Review: Ranked #2 of 164

Last updated: October 5, 2026

The Earfun Uboom L ranks #2 out of 164 total Medium Size Portable Bluetooth Speakers for sound quality. See all Portable Bluetooth rankings for every top pick.

Brand: EarFun

Prices on this page were last checked October 5, 2026 at 10:21 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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Earfun Uboom L - ranked #2 of 164 Medium Size Portable Bluetooth Speakers · Editor's rating 4.6/5
Check price at Amazon ($49.79 after coupon UBOOMLWC) →

#2 Earfun Uboom L: $49.79 after coupon UBOOMLWC Amazon EarFun eBay

Pros: One of the strongest small-speaker values for music: reviews praise clear vocals, a natural overall balance and a genuinely convincing stereo image when two are paired. IP67 protection, indoor/outdoor sound modes and Video Mode make it unusually adaptable; Video Mode substantially improves lip-sync for a single speaker. Measured bass extension of 56Hz (-10dB).

Cons: It cannot produce real low-bass rumble or fill a large, noisy space, and the top end loses some detail. Low-latency Video Mode disables stereo pairing, so a two-speaker setup is not a good movie system. Firmware and app behavior have also varied over the model’s long life, and the physical controls can be easy to trigger in a bag. Latency is about 400ms by default and 66ms in Video Mode, which you enable by pressing the Bluetooth button twice.

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.

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How it compares: Just above it: Joy&Oluv’Sone sEARius S1. Just below it: Soundcore Motion 300 - $30 more, 3 fewer hours of battery life.

Amplifier Power28W
AppYes (firmware >= 1.2.6)
Aux InputYes
Aux Latency216ms
Bass Extension (-10dB)56Hz
Battery Life16 hours (Manufacturer specified)
BluetoothYes
Bluetooth CodecsAAC, SBC
Bluetooth Latency400ms normal / 66ms low latency mode
Bluetooth Version5.0
Built-in MicrophoneYes
Digital Aux InputNo
Dimensions3.1” x 8.3” x 2.8” (78 x 210 x 72 mm)
Drivers2x 55mm drivers + 2x passive radiators
EQYes (10 band, firmware >= 1.2.6)
IP RatingIP67
Maximum SPL103dB (measured by Alan Ross Reviews)
OmnidirectionalNo
Party ModeNo
Power BankNo
Power InputUSB-C
StereoYes
TWSYes
Weight1.4 lbs (650 g)
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