Short answer: the Earfun Uboom Slim. It ranks #41 of 150 medium speakers by sound quality, rated 3.7/5, at $79. The Tronsmart T8 ranks #52, rated 3.6/5, at $49.99, $29.01 cheaper, which does not close the gap in sound quality.
Why pick the Earfun Uboom Slim: Excellent pricing, strong waterproof build (IPX7), good battery life (16 hours), smooth sound with volume compensation, speakerphone capability. The catch: Not as deep bass as others.
What the Tronsmart T8 does well: Two upward firing drivers, a woofer and two passive radiators spread sound evenly around the speaker, so placement matters less. The tradeoff: Against the Xiaomi Sound Outdoor, listeners in Mateusz Cholewa’s comparison found the T8 harsh and tiring, and Techder Audios’ test showed the Xiaomi Sound Party with deeper, heavier bass.
Buy the Earfun Uboom Slim. It is rated higher for sound quality, and the $29.01 you would save on the Tronsmart T8 does not close the gap.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Earfun Uboom Slim | Tronsmart T8 | |
|---|---|---|
| Price | $79 | $49.99 |
| Ranked | #41 of 150 in Medium Size Portable Bluetooth Speakers | #52 of 150 in Medium Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | ~63Hz | - |
| Battery Life | 16 hours (Manufacturer specified) | 18 hours at 50% volume, lights off (Manufacturer specified) |
| Power Input | USB-C | USB-C |
| Stereo | Yes | - |
| Omnidirectional | No | Pointing up |
| Weight | 1.2 lbs (560 g) | 1.8 lbs (0.80 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | - |
| Bluetooth Version | 5.2 | 5.3 |
| Built-in Microphone | Yes | - |
| Drivers | 45mm speaker drivers | 2x upward firing full-range drivers + 1x woofer + 2x passive radiators |
| Amplifier Power | 20W | 40W |
| IP Rating | IPX7 | IPX7 |
| Digital Aux Input | No | - |
| Dimensions | 2.6”H x 7.1”W x 2.6”D (65 x 180 x 65 mm) | 8.6”H x 3.2”W x 3.2”D (218 x 82 x 82 mm) |
| App | No | Yes (Tronsmart) |
| Aux Input | Yes | Yes |
| EQ | No | Yes (app) |
| TWS | Yes | Yes |
| Charging Time | - | 4.5 hours |
| Frequency Response | - | 56Hz - 20kHz (Manufacturer specified) |
| Lights | - | Yes |
| MicroSD Playback | - | Yes |
| Strap | - | Yes (lanyard) |
Related Speaker Comparisons
More worthwhile head-to-heads for Earfun Uboom Slim:
- Earfun Uboom L vs Earfun Uboom Slim
- Soundcore Motion 300 vs Earfun Uboom Slim
- JBL Charge 6 vs Earfun Uboom Slim
- JBL Flip 6 vs Earfun Uboom Slim
- JBL Flip 7 vs Earfun Uboom Slim
Prices on this page were last checked September 29, 2026 at 3:43 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
Earfun Uboom Slim: $79 eBay
Pros: Excellent pricing, strong waterproof build (IPX7), good battery life (16 hours), smooth sound with volume compensation, speakerphone capability. Measured bass extension of ~63Hz (-10dB).
Cons: Not as deep bass as others. Warm tuned, peaks in the mids and lower treble, rolled off upper treble
Full Earfun Uboom Slim review and specifications →
| Amplifier Power | 20W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~63Hz |
| Battery Life | 16 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 2.6”H x 7.1”W x 2.6”D (65 x 180 x 65 mm) |
| Drivers | 45mm speaker drivers |
| EQ | No |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.2 lbs (560 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Earfun Uboom Slim vs Xiaomi Sound Outdoor
- Earfun Uboom Slim vs Bose Soundlink Flex
- Earfun Uboom Slim vs Bose Soundlink Flex 2nd gen
- Earfun Uboom Slim vs Bose Soundlink Revolve+ II
- Earfun Uboom Slim vs Tribit Xsound Plus 2
- Earfun Uboom Slim vs Soundcore Boom 3i
- Earfun Uboom Slim vs Soundcore 3/Soundcore Select 2
- Earfun Uboom Slim vs Xiaomi Sound Party
- See all 17 comparisons
Tronsmart T8: $49.99 Best Buy Tronsmart eBay
Pros: Two upward firing drivers, a woofer and two passive radiators spread sound evenly around the speaker, so placement matters less. In AudioPro Reviews’ and Dresser’s comparisons most listeners preferred it to the JBL Flip 6, JBL Flip 7 and Ultimate Ears Megaboom 3 for its fuller body and less fatiguing treble, and Audioreviews.org found it stayed clean at maximum volume. It is rated for 40W, with IPX7 waterproofing, an 18 hour battery rating, app EQ, lights, a volume wheel, aux input, TF card playback, a lanyard and stereo pairing.
Cons: Against the Xiaomi Sound Outdoor, listeners in Mateusz Cholewa’s comparison found the T8 harsh and tiring, and Techder Audios’ test showed the Xiaomi Sound Party with deeper, heavier bass. Josh’s Gadgets and More preferred the cheaper Vortex Blast for smoother highs and deeper bass. Bass is rated only down to 56Hz.
Full Tronsmart T8 review and specifications →
| Amplifier Power | 40W |
|---|---|
| App | Yes (Tronsmart) |
| Aux Input | Yes |
| Battery Life | 18 hours at 50% volume, lights off (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Version | 5.3 |
| Charging Time | 4.5 hours |
| Dimensions | 8.6”H x 3.2”W x 3.2”D (218 x 82 x 82 mm) |
| Drivers | 2x upward firing full-range drivers + 1x woofer + 2x passive radiators |
| EQ | Yes (app) |
| Frequency Response | 56Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Lights | Yes |
| MicroSD Playback | Yes |
| Omnidirectional | Pointing up |
| Power Input | USB-C |
| Strap | Yes (lanyard) |
| TWS | Yes |
| Weight | 1.8 lbs (0.80 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- AudioPro Reviews: Tronsmart T8 vs JBL Flip 6 | Which one sounds BETTER?
- Dresser: JBL Flip 7 vs Tronsmart T8 Bluetooth speaker sound test
- Dresser: Tronsmart T8 vs UE mega boom 3 sound test
- Mateusz Cholewa: Tronsmart T8 vs Xiaomi Sound Outdoor & Opinion in Subtitles More from Mateusz Cholewa →
- Techder Audios: Xiaomi Sound Party 50w VS Tronsmart T8 More from techderaudios →
- Techder Audios: Xdobo X8 IV VS Tronsmart T8
- Josh’s Gadgets and More: Tronsmart T8 vs Vortex Blast
- Audioreviews.org: Tronsmart T8 Portable Bluetooth 5.3 Speaker Review
- Head-to-Head Comparisons