These sit in different size classes, so this is not a straight ranking comparison. The JBL Partybox 330 ranks #1 of 50 party speakers by sound quality at $629.95; the Earfun Uboom X ranks #1 of 73 boombox speakers by sound quality at $128.
On the JBL Partybox 330 side: Handle and wheels are convenient. Set against that: Sound quality is nearly identical to the 310 and Stage 320 despite the power bump, so probably not worth an upgrade if you already own either of those.
The case for the Earfun Uboom X: Deeper bass than the Stormbox Blast. Extremely neutral, possibly the best of any modern Bluetooth speaker slightly behind the Vifa Helsinki. The tradeoff: The out of the box 0.33 firmware and EQ sounds horrible.
One note: the Earfun Uboom X is discontinued, but it still ranks #1 of 73 boombox speakers by sound quality, ahead of most of what is still sold new, so it is worth considering used.
Buy the JBL Partybox 330 at $629.95 if you want a party speaker. Buy the Earfun Uboom X at $128 if you want a boombox speaker instead.
If battery life is a priority, the Earfun Uboom X is rated for 30 hours versus 18 hours for the JBL Partybox 330.
If water resistance matters to you, the Earfun Uboom X at IP67 (brief submersion) holds up far better than the JBL Partybox 330 at IPX4 (splashing).
Specifications Side By Side
| JBL Partybox 330 | Earfun Uboom X | |
|---|---|---|
| Price | $629.95 | $128 Discontinued |
| Ranked | #1 of 50 in Party Size Portable Bluetooth Speakers | #1 of 73 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | Yes (Earfun Audio app) |
| Aux Input | Yes | Yes |
| Battery Life | 18 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC | AAC, SBC |
| Bluetooth Version | 6.0 | 5.3 |
| Charging Time | 3 hours | - |
| Drivers | 2x 6.5" (165mm) woofers + 2x 1" (25mm) PEN dome tweeters | 2x 102mm (4") woofers + 2x 20mm tweeters |
| EQ | Yes (Smart EQ mode) | Yes (App EQ) |
| Guitar Input | Yes | - |
| IP Rating | IPX4 | IP67 |
| Microphone Input | Yes (Karaoke mode with echo effect) | - |
| Optical Input | Yes | - |
| Party Mode | Yes (Auracast) | Yes (Party Connect mode, up to 50 speakers) |
| Power Bank | Yes (USB-C, 5V/1A) | Yes (USB-C) |
| Power Input | AC Power cord | USB-C |
| Removable Battery | Yes | - |
| Stereo | Partially | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | No |
| Weight | 37.7 lbs / 17.1 kg | 9 lbs / 4.1 kg |
| Output Power | 280W | 80W |
| Digital Aux Input | No | No |
| Aux Latency | - | 16ms |
| Bass Extension (-10dB) | - | ~38Hz |
| Built in Microphone | - | Yes |
| Bluetooth Latency | - | SBC Video mode 48ms, AAC Video mode 128ms, SBC 112ms, AAC 176ms |
| Max Volume | - | 110dB |
| FM Tuner | - | No |
| Dimensions | - | 15.7" x 5.9" x 8.5" (400 x 150 x 215 mm) |
| Discontinued | - | Yes |
Related Speaker Comparisons
More useful head-to-heads from the same speaker class:
- JBL Boombox 4 vs Tribit Stormbox Blast
- JBL Partybox Stage 320 vs Klipsch Gig XXL
- Teufel Rockster Air 2 vs Tribit Stormbox Blast
- JBL Partybox 330 vs Onn Large Party gen 2
- B&O Beolit 20 vs Earfun Uboom X
The Two Speakers In Full
JBL Partybox 330: $629.95 Amazon Bhphotovideo
Pros: Handle and wheels are convenient. Customizable lightshow. Removable battery. Slightly more power than the 310 and Stage 320 (280W vs 240W). Adds an optical TV input and USB-C lossless playback, plus dual mic and guitar inputs for karaoke and live sets.
Cons: Sound quality is nearly identical to the 310 and Stage 320 despite the power bump, so probably not worth an upgrade if you already own either of those. Removed the dedicated mic gain and microphone control knobs found on the 310/320. Some people don’t like the new lightshow design. Very large. Note, JBL daisychain is not compatible with any other non-JBL speaker and is possibly a fully digital signal.
Full JBL Partybox 330 review and specifications →
| App | Yes |
|---|---|
| Aux Input | Yes |
| Battery Life | 18 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 6.0 |
| Charging Time | 3 hours |
| Digital Aux Input | No |
| Drivers | 2x 6.5" (165mm) woofers + 2x 1" (25mm) PEN dome tweeters |
| EQ | Yes (Smart EQ mode) |
| Guitar Input | Yes |
| IP Rating | IPX4 |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Optical Input | Yes |
| Output Power | 280W |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB-C, 5V/1A) |
| Power Input | AC Power cord |
| Removable Battery | Yes |
| Stereo | Partially |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 37.7 lbs / 17.1 kg |
As an eBay Partner, we may be compensated if you make a purchase.
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Earfun Uboom X: $128 Discontinued Myearfun Amazon
Pros: Tuned by Oluv and he knocked it out of the park again. Deeper bass than the 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.
Cons: The out of the box 0.33 firmware and EQ sounds horrible. Some people have mentioned sound interruption issues when using 2 in TWS, I don’t have this issue with my Pixel 7 Pro, try disabling AAC in that case. 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 →
| App | Yes (Earfun Audio app) |
|---|---|
| Aux Input | Yes |
| Aux Latency | 16ms |
| Bass Extension (-10dB) | ~38Hz |
| Battery Life | 30 hours (Manufacturer specified) |
| 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) |
| Discontinued | Yes |
| Drivers | 2x 102mm (4") woofers + 2x 20mm tweeters |
| EQ | Yes (App EQ) |
| FM Tuner | No |
| IP Rating | IP67 |
| Max Volume | 110dB |
| Omnidirectional | No |
| Output Power | 80W |
| 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 |
As an eBay Partner, we may be compensated if you make a purchase.
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- Reviews, Comparisons and Sound Samples
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