Short answer: the Bogasing M4 ranks #26 of 142 medium speakers by sound quality at $45.99; the Earfun Uboom L ranks #1 at $49.79. With prices this close, go by the sound-quality ranking rather than the cost.
The case for the Bogasing M4: Use super bass mode for the most balanced sound. The catch: A bit harsh and thin sounding.
What the Earfun Uboom L gets right: Tuned by Oluv and he knocked it out of the park. The tradeoff: Latency is high (400ms) without turning on low latency mode (66ms) which doesn’t work when two speakers are TWS paired.
Buy the Bogasing M4 if the price matters more than sound quality. Buy the Earfun Uboom L if sound quality matters more than the price.
Battery life favors the Bogasing M4: rated for 24 hours against 16 hours for the Earfun Uboom L.
Specifications Side By Side
| Bogasing M4 | Earfun Uboom L | |
|---|---|---|
| Price | $45.99 Discontinued | $49.79 after coupon UBOOMLWC |
| Ranked | #26 of 142 in Medium Size Portable Bluetooth Speakers | #1 of 142 in Medium Size Portable Bluetooth Speakers |
| App | No | Yes (firmware >= 1.2.6) |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 54Hz | 56Hz |
| Battery Life | 24 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| EQ | No | Yes (10 band, firmware >= 1.2.6) |
| IP Rating | IPX7 | IP67 |
| Bluetooth Latency | 150ms | 400ms normal / 66ms low latency mode |
| Max Volume | 99dB | 103dB |
| MicroSD Playback | Yes | - |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 1.6 lbs / 731 g | 1.4 lbs / 650 g |
| Bluetooth Version | 5.0 | 5.0 |
| Output Power | 40W | 28W |
| Drivers | 52mm speaker unit | 2x 55mm drivers + 2x passive radiators |
| Digital Aux Input | No | No |
| Discontinued | Yes | - |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | AAC, SBC |
| Aux Latency | - | 216ms |
| Built in Microphone | - | Yes |
| Party Mode | - | No |
| Power Bank | - | No |
| Dimensions | - | 3.1" x 8.3" x 2.8" (78 x 210 x 72 mm) |
Related Speaker Comparisons
How Earfun Uboom L compares with other leading options:
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- Earfun Uboom L vs Soundcore Motion+
- Earfun Uboom L vs Minirig 4
- Earfun Uboom L vs JBL Charge 6
- JBL Flip 7 vs Earfun Uboom L
Prices on this page were last checked September 8, 2026 at 6:02 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
Bogasing M4: $45.99 Discontinued eBay
Pros: Bogasing M4 uses 52mm speaker unit. Its 731 g, claimed 24 hours (Manufacturer specified) battery life, IPX7 protection, aux input, up to 99dB and stereo playback make it a practical option for its intended room or portable use.
Cons: Bass is limited by its 54Hz specification. There is no companion app. No EQ adjustment. Discontinued.
Full Bogasing M4 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 54Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Latency | 150ms |
| Bluetooth Version | 5.0 |
| Digital Aux Input | No |
| Discontinued | Yes |
| Drivers | 52mm speaker unit |
| EQ | No |
| IP Rating | IPX7 |
| Max Volume | 99dB |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Output Power | 40W |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.6 lbs / 731 g |
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: Bogasing M4 Review - vs JBL Charge 5 & Motion Plus - a new contender? More from alanrossreviews →
- Alan Ross Reviews: Bose Soundlink Flex vs Soundcore Boost vs Bogasing M4 - cheap or Bose?
- Alan Ross Reviews: Bogasing M4 or Soundcore Boost or Maxsound Plus for $50 champion?? 🤷♀️
- Alan Ross Reviews: Tronsmart Element Force review vs Bogasing M4 - cheap speaker 🤑
- Head-to-Head Comparisons
Earfun Uboom L: $49.79 after coupon UBOOMLWC Amazon Myearfun 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.
Cons: It cannot produce real low-bass rumble or fill a large, noisy space, and RTINGS finds the top end loses 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.
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.
Full Earfun Uboom L review and specifications →
| 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 |
| Digital Aux Input | No |
| Dimensions | 3.1" x 8.3" x 2.8" (78 x 210 x 72 mm) |
| Drivers | 2x 55mm drivers + 2x passive radiators |
| EQ | Yes (10 band, firmware >= 1.2.6) |
| IP Rating | IP67 |
| Max Volume | 103dB |
| Omnidirectional | No |
| Output Power | 28W |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.4 lbs / 650 g |
- Links
- Reviews, Comparisons and Sound Samples
- Joy & Oluv’Sone: Best portable speakers 2025 - get the best bang for your buck $$$ More from Oluv’Sone →
- Oluv Patreon: SoundCore Boom 3i - first impressions & EQs
- Joy & Oluv’Sone: New Beats Pill 2024: sound demo
- CEONTHEMAKING: Earfun Uboom L - This Speaker Replaced My JBL Flip 6…
- Techder Audios: EARFUN UBOOM L VS SOUNDCORE MOTION+ More from techderaudios →
- Alan Ross Reviews: Earfun UBoom L Review Speaker tuned by a Geek vs Soundcore Motion Plus $100 dollar best portable? More from alanrossreviews →
- Oluv Patreon: Soundcore Motion 300 = Bose Soundlink Flex = Earfun UBoom L?
- Jay’s Straight Up Reviews & More: Earfun UBoom L 💣(EQ2) 🆚 Tribit XSound Mega 🔥(XBass EQ)- Bluetooth Speaker Bedroom Bash. Who U Got?🔝 More from JaysStraightUpReviews →
- Joy & Oluv’Sone: JBL, Bose, B&O, Sonos, Earfun, SoundCore… which portable speaker sounds best?
- DIY Subwoofers - Uboom L Measurements and Review
- Head-to-Head Comparisons