These sit in different size classes, so this is not a straight ranking comparison. The EarFun Uboom X ranks #1 of 91 boombox speakers by sound quality at $159.99; the JBL Partybox 100 ranks #8 of 46 party speakers by sound quality at $499.99. The JBL Partybox 100 is discontinued; its replacement is the JBL Partybox Club 120.
The EarFun Uboom X is the longer-running, lighter pick. Tuned by Oluv and he knocked it out of the park again. It is rated for 30 hours of battery against 12 for the JBL Partybox 100. At 9 lbs (4.1 kg) it weighs much less than the JBL Partybox 100 at 21.4 lbs (9.7 kg). It is rated IP67, while the JBL Partybox 100 has no water resistance. The catch: The out of the box 0.33 firmware and EQ sounds horrible.
Why pick the JBL Partybox 100: Quite neutral sound, pretty deep bass. The tradeoff: A slight peak in the upper mids.
Worth knowing: the EarFun Uboom X is discontinued, though it still ranks #1 of 91 boombox speakers by sound quality, so a used unit beats most of what is still sold new.
Buy the EarFun Uboom X ($159.99) for a boombox speaker; the JBL Partybox 100 ($499.99) suits a party speaker instead.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| EarFun Uboom X | JBL Partybox 100 | |
|---|---|---|
| Price | $159.99 Discontinued | $499.99 Discontinued |
| Ranked | #1 of 91 in Boombox Size Portable Bluetooth Speakers | #8 of 46 in Party Size Portable Bluetooth Speakers |
| App | Yes (Earfun Audio app) | No |
| Aux Input | Yes | Yes |
| Aux Latency | 16ms | - |
| Bass Extension (-10dB) | ~38Hz | 41Hz |
| Battery Life | 30 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, SBC | SBC |
| Built-in Microphone | Yes | - |
| EQ | Yes (App EQ) | No |
| IP Rating | IP67 | None |
| Bluetooth Latency | SBC Video mode 48ms, AAC Video mode 128ms, SBC 112ms, AAC 176ms | - |
| Maximum SPL | 110dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Party Connect mode, up to 50 speakers) | No |
| Power Bank | Yes (USB-C) | Yes (USB-A, 5V/2.1A) |
| Power Input | USB-C | AC Power cord |
| TWS | Yes | Yes |
| Weight | 9 lbs (4.1 kg) | 21.4 lbs (9.7 kg) |
| Stereo | Yes | Partially |
| Omnidirectional | No | No |
| USB Playback | No | Yes |
| FM Tuner | No | - |
| Bluetooth Version | 5.3 | 4.2 |
| Amplifier Power | 80W | 160W |
| Dimensions | 15.7” x 5.9” x 8.5” (400 x 150 x 215 mm) | 11.3” x 21.7” x 11.4” (288 x 551 x 290 mm) |
| Drivers | 2x 102mm (4”) woofers + 2x 20mm tweeters | 2x 5.25” (133mm) woofers + 2x 2.25” (57mm) tweeters |
| Digital Aux Input | No | No |
| Lights | Yes | Yes |
| Charging Time | - | 6.5 hours |
| Frequency Response | - | 45Hz - 18kHz (Manufacturer specified) |
| Guitar Input | - | Yes |
| Microphone Input | - | Yes (Karaoke mode with echo effect) |
| Strap | - | No |
Watch Them Compared
Videos and reviews that test both speakers side by side.
Related Speaker Comparisons
How EarFun Uboom X compares with other leading options:
- EarFun Uboom X vs Tribit Stormbox Blast
- EarFun Uboom X vs Harman Kardon Go + Play 3
- EarFun Uboom X vs JBL Partybox Encore 2
- EarFun Uboom X vs JBL Partybox Encore Essential 2
- EarFun Uboom X vs JBL Partybox Encore
Prices on this page were last checked October 10, 2026 at 5:37 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 X: $159.99 Discontinued eBay
Pros: Tuned by Oluv and he knocked it out of the park again. Deeper bass than the Tribit Stormbox Blast. 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 single volume level due to Oluv’s individual EQ settings at each volume level. Other speakers will need a different EQ at each volume level. Amazing sounding at low levels as it boosts bass and treble at low levels to account for the equal-loudness contour. Just considering the midrange and treble, this speaker is better sounding than the EarFun Uboom L. Measured bass extension of ~38Hz (-10dB).
Cons: The out of the box 0.33 firmware and EQ sounds horrible. Some users have reported sound interruption issues when running two in TWS, though not on every source device, and disabling AAC resolves it where it occurs. Discontinued.
Setup: Please update it using the Earfun app (Android or iOS) and select an Oluv EQ. The Earfun app has sound profiles created by Oluv for Studio, Indoor, Indoor+, Outdoor, Outdoor+, BOOM xxX, and Ground 0 which are all fantastic. Oluv has a newer firmware pack that brings it up a few more notches of neutral
Full EarFun Uboom X review and specifications →
| Released | Mar 2024 (2 years ago) |
|---|---|
| Amplifier Power | 80W |
| App | Yes (Earfun Audio app) |
| Aux Input | Yes |
| Aux Latency | 16ms |
| Bass Extension (-10dB) | ~38Hz |
| Battery Life | 30 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | AAC, SBC |
| Bluetooth Latency | SBC Video mode 48ms, AAC Video mode 128ms, SBC 112ms, AAC 176ms |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 15.7” x 5.9” x 8.5” (400 x 150 x 215 mm) |
| Drivers | 2x 102mm (4”) woofers + 2x 20mm tweeters |
| EQ | Yes (App EQ) |
| FM Tuner | No |
| IP Rating | IP67 |
| Lights | Yes |
| Maximum SPL | 110dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect mode, up to 50 speakers) |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 9 lbs (4.1 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- JOY‘s 3D Audio Show: B&W Zeppelin - audiophile sound quality test 🎧 More from Oluv’Sone →
- Oluv Patreon: B&W Zeppelin vs Earfun UBoom X (indoor+)
- Oluv Patreon: An evening with the “best portable speakers”?
- Joy & Oluv’Sone: Tribit Stormbox Blast vs Earfun UBoom X, a PROPER sound test 😎
- Joy & Oluv’Sone: 🎃🔥 UBoom X - Halloween Rock Special 🎸🤘
- JOY‘s 🎧3D🔈Audio-Show: JBL Charge 6, Xtreme 4 & Earfun UBoom X - taking sound to the top
- M1M Tech Channel: Partybox Killer? 2x Earfun UBoom X stärker als JBL Encore 2 ? More from M1MTechChannel →
- Mateusz Cholewa: EarFun UBOOM X Deep Bass 🆚 Tribit Stormbox Blast🎶Review👌 More from Mateusz Cholewa →
- Mateusz Cholewa: TRIBIT StormBox LAVA vs EarFun UBOOM X
- Joy & Oluv’Sone: $600 premium Bluetooth speaker vs $115 cheapo UBoom X
- Joy & Oluv’Sone: Tribit Stormbox Blast 2 - outdoor sound test
- Joy & Oluv’Sone: Tribit Stormbox Blast 2 - indoor sound test
- Joy & Oluv’Sone: Tribit Stormbox Blast 2 vs 2 Earfun UBoom X - outdoor test
- Joy & Oluv’Sone: JBL Partybox Encore vs Earfun UBoom X: outdoors
- Joy & Oluv’Sone: JBL Partybox Encore vs Earfun UBoom X: indoors
- Joy & Oluv’Sone: Soundcore Motion Boom Plus & Earfun UBoom X - sound test
- Joy & Oluv’Sone: Best portable speakers 2025 - get the best bang for your buck $$$
- Oluv Patreon: JBL Partybox 720 - first impressions
- Oluv Patreon: Harman Kardon go+play 3 vs Earfun UBoom X
- Oluv Patreon: Earfun UBoom X vs JBL Boombox 3 - outdoor test
- Oluv Patreon: Earfun UBoom X im Vergleich zum Teufel nochmal
- Oluv Patreon: Earfun UBoom X vs JBL Boombox 3 - outdoor
- Oluv Patreon: UBoom X - desktop mode demonstration
- Oluv Patreon: Earfun UBoom X - different firmware versions
- Oluv Patreon: UBoom X - final outdoor test
- Oluv Patreon: Tribit Stormbox Blast vs Earfun UBoom X - outdoor test
- Oluv Patreon: Earfun UBoom X - listening session
- Oluv Patreon: Earfun UBoom X vs JBL Partybox 100
- Oluv Patreon: Earfun UBoom X - final sound check
- Oluv Patreon: Earfun UBoom X - teaser 3
- Oluv Patreon: Earfun UBoom X - teaser 2
- Oluv Patreon: Earfun UBoom X - teaser 1
- Oluv Patreon: Marshall Middleton II - first impressions
- Oluv Patreon: JBL Authentics 300 - listening session
- Oluv Patreon: Zealot S89 vs Yeahbox Boom Max3 - indoor listening test
- Alan Ross Reviews: Earfun Uboom X Mini Boombox bluetooth speaker, a PROPER review 😝 More from alanrossreviews →
- JOY‘s 🎧3D🔈Audio-Show: JBL Boombox 4 vs Earfun UBoom X - sound test
- Josh’s Gadgets and More: Earfun Uboom X vs ZZA K8 sound comparison
- Joy & Oluv’Sone: J&O sEARius vs Earfun UBoom X and a bit of Bose
- Mateusz Cholewa: Marshall Kilburn 3 vs EarFun UBOOM X
- Dominik Reviews: Tronsmart Fiitune X30 vs Earfun UBOOM X - BOOMY SOUND! - Sound Test More from Dominik Reviews →
- Dominik Reviews: Bugani Brief Pro vs Earfun UBOOM X - Very similar? - Sound Test
- Joy & Oluv’Sone: Earfun UBoom X vs Teufel Rockster Air 2 - basstest
- Dominik Reviews: Teufel BOOMSTER 4 vs Earfun UBOOM X - BASS!! - Sound Test
- Dominik Reviews: Tronsmart Bang 2 vs Earfun UBOOM X - Similar Size, not so similar performance?
- Head-to-Head Comparisons
- EarFun Uboom X vs Tribit Stormbox Blast
- EarFun Uboom X vs Harman Kardon Go + Play 3
- EarFun Uboom X vs JBL Partybox Encore 2
- EarFun Uboom X vs JBL Partybox Encore Essential 2
- EarFun Uboom X vs JBL Partybox Encore
- EarFun Uboom X vs Harman Kardon Onyx Studio 9
- EarFun Uboom X vs Zealot ZE51
- EarFun Uboom X vs Zealot ZE41
- See all 36 comparisons
JBL Partybox 100: $499.99 Discontinued Amazon eBay
Newer model: the JBL Partybox Club 120, ranked higher, rated 4.5/5, released Apr 2024. See every JBL PartyBox generation.
Pros: Quite neutral sound, pretty deep bass. Measured bass extension of 41Hz (-10dB).
Cons: A slight peak in the upper mids. Slight TWS issue where the 2nd is slightly delayed. Just as loud and slightly deeper bass than a Tribit Stormbox Blast which is way smaller with better sound quality. Discontinued.
Full JBL Partybox 100 review and specifications →
| Released | Jul 2019 (7 years ago) |
|---|---|
| Amplifier Power | 160W |
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 41Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Charging Time | 6.5 hours |
| Digital Aux Input | No |
| Dimensions | 11.3” x 21.7” x 11.4” (288 x 551 x 290 mm) |
| Drivers | 2x 5.25” (133mm) woofers + 2x 2.25” (57mm) tweeters |
| EQ | No |
| Frequency Response | 45Hz - 18kHz (Manufacturer specified) |
| Guitar Input | Yes |
| IP Rating | None |
| Lights | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A, 5V/2.1A) |
| Power Input | AC Power cord |
| Stereo | Partially |
| Strap | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 21.4 lbs (9.7 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- KULAS TECH SHOW: JBL Partybox 310, 100, on the Go Sound comparison More from KULASTECHSHOW20 →
- DLX Willington: 🥰🙄SONY SRS XP500 vs JBL Partybox 100 Sound battle with sound sample love and hate this More from DLXWillington →
- HQ AUDIO Exchange: Bose S1 Pro vs. JBL PartyBox 100 Bass Sound Test 😱💥🔥
- DLX Willington: JBL Partybox 100 vs UE Hyperboom SoundBattle Does Size Matter🤔
- Stereo Specs: 🔥JBL PARTYBOX 100 vs PANASONIC SC TMAX10🔥BIG BASS Sound🔊Best 2021 Deep Sound Speakers👑USA
- DLX Willington: 🤣JBL Partybox 100 vs Sony GTK XB60 Sound Battle You Asked For It
- Oluv Patreon: Earfun UBoom X vs JBL Partybox 100 More from Oluv’Sone →
- Vua2hand: Solo Braven XXL/2 vs JBL Partybox 100 Sound test l Braven hay Jbl ?!!
- flmclau: Zealot S98 vs Jbl Partybox100 outdoors flat mode and bass sound test
- Head-to-Head Comparisons
- JBL Partybox 100 vs JBL Partybox 130
- JBL Partybox 100 vs JBL Partybox 110
- JBL Partybox 100 vs JBL Partybox Club 120
- JBL Partybox 100 vs JBL Partybox 300
- JBL Partybox 100 vs Onn XL Wireless Party Speaker
- JBL Partybox 100 vs Sony ULT Tower 5
- JBL Partybox 100 vs JBL Partybox 310
- JBL Partybox 100 vs Zealot PT21
- See all 46 comparisons