Short answer: both are discontinued, so this only matters if you are buying used. Used, the EarFun Uboom X is the better pick: it ranks #1 of 113 boombox speakers by sound quality (rated 4.7/5), against #7 (rated 4.3/5) for the JBL Partybox Encore. If you want one new, the JBL Partybox Encore 2 replaces the JBL Partybox Encore and is rated 4.4/5 at $330.
Buy the EarFun Uboom X only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, buy the JBL Partybox Encore 2, which replaces the JBL Partybox Encore.
There is a real battery-life gap here: the EarFun Uboom X is rated for 30 hours, the JBL Partybox Encore only 6 hours.
There is a real gap in water resistance: the EarFun Uboom X at IP67 (brief submersion) against the JBL Partybox Encore, which has IPX4 (splashing).
Looking for alternatives? See the complete Portable Bluetooth rankings.
An extremely neutral Bluetooth speaker, with deep bass and tuning that sounds right at every volume; now discontinued but worth buying used.
A great sounding stereo party speaker with two wireless mics included and plenty of volume; now discontinued but worth buying used.
Prices on this page were last checked November 7, 2026 at 7:34 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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Specifications Side By Side
| EarFun Uboom X | JBL Partybox Encore | |
|---|---|---|
| Price | $159.99 Discontinued | $230 Discontinued |
| Ranked | #1 of 113 in Boombox Size Portable Bluetooth Speakers | #7 of 113 in Boombox Size Portable Bluetooth Speakers |
| App | Yes (Earfun Audio app) | Yes (JBL PartyBox app) |
| Aux Input | Yes | Yes |
| Aux Latency | 16ms | 17ms |
| Bass Extension (-10dB) | ~38Hz | 38Hz |
| Battery Life | 30 hours (Manufacturer specified) | 6 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, SBC | SBC |
| Built-in Microphone | Yes | No |
| EQ | Yes (App EQ) | Yes (3 band App EQ) |
| IP Rating | IP67 | IPX4 |
| Bluetooth Latency | SBC Video mode 48ms, AAC Video mode 128ms, SBC 112ms, AAC 176ms | 100ms |
| Maximum SPL | 110dB (measured by Alan Ross Reviews) | 110dB (measured by Alan Ross Reviews) |
| Party Mode | Yes (Party Connect mode, up to 50 speakers) | Yes (PartyBoost up to 100 speakers) |
| Power Bank | Yes (USB-C) | Yes (USB-A, 5V/1.5A) |
| Power Input | USB-C | AC Power cord |
| TWS | Yes | Yes |
| Weight | 9 lbs (4.1 kg) | 13.9 lbs (6.3 kg) |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| USB Playback | No | Yes |
| FM Tuner | No | - |
| Bluetooth Version | 5.3 | 5.1 |
| Amplifier Power | 80W | 100W RMS |
| Dimensions | 15.7” x 5.9” x 8.5” (400 x 150 x 215 mm) | 10.9” x 12.9” x 11.5” (276 x 327 x 293 mm) |
| Drivers | 2x 102mm (4”) woofers + 2x 20mm tweeters | 135mm woofer + 2x 20mm tweeters |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Strap | Yes (detachable shoulder strap) | - |
| Wireless Microphones | - | Yes 2 Included |
Watch Them Compared
Videos and reviews that test both speakers side by side.
- Joy & Oluv’Sone: JBL Partybox Encore vs Earfun UBoom X: indoors
- Joy & Oluv’Sone: JBL Partybox Encore vs Earfun UBoom X: outdoors
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