These sit in different size classes, so this is not a straight ranking comparison. The Earfun Uboom X ranks #1 of 70 boombox speakers at $128; the Harman Kardon Citation 200 ranks #13 of 75 large speakers at $130.
What the Earfun Uboom X gets right: Tuned by Oluv and he knocked it out of the park again. The catch: The out of the box 0.33 firmware and EQ sounds horrible.
On the Harman Kardon Citation 200 side: Deeper bass than any Onyx. The tradeoff: Overly boomy by default, you can short press the Bluetooth and volume down buttons simultaneously to decrease the bass.
One note: the Earfun Uboom X is discontinued, but it still ranks #1 of 70 boombox speakers, ahead of most of what is still sold new, so it is worth considering used.
Buy the Earfun Uboom X at $128 if you want a boombox speaker. Buy the Harman Kardon Citation 200 at $130 if you want a large speaker instead.
Specifications Side By Side
| Earfun Uboom X | Harman Kardon Citation 200 | |
|---|---|---|
| Price | $128 Discontinued | $130 Discontinued |
| Ranked | #1 of 70 in Boombox Size Portable Bluetooth Speakers | #13 of 75 in Large Size Portable Bluetooth Speakers |
| App | Yes (Earfun Audio app) | Yes (Harman Kardon app) |
| Aux Input | Yes | No |
| Aux Latency | 16ms | - |
| Bass Extension (-10dB) | ~38Hz | - |
| Battery Life | 30 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| Bluetooth Codecs | AAC, SBC | SBC |
| Built in Microphone | Yes | Yes |
| EQ | Yes (App EQ) | No |
| IP Rating | IP67 | IPX4 |
| Bluetooth Latency | SBC Video mode 48ms, AAC Video mode 128ms, SBC 112ms, AAC 176ms | - |
| Max Volume | 110dB | - |
| Party Mode | Yes (Up to 50 speakers) | No |
| Power Bank | Yes | No |
| Power Input | USB-C | USB-C |
| TWS | Yes | No |
| Weight | 9 lbs / 4.1 kg | 6.3 lbs / 2.85 kg |
| Stereo | Yes | Partially (1 woofer) |
| USB Playback | No | No |
| FM Tuner | No | - |
| Bluetooth Version | 5.3 | 4.2 |
| Output Power | 80W | 50W |
| Dimensions | 15.75" x 5.91" x 8.46" (400 x 150 x 215 mm) | 7.0" x 8.6" x 6.8" (178 x 219 x 172 mm) |
| Drivers | 2x 102mm (4") woofers + 2x 20mm tweeters | 5" woofer, 1" tweeter |
| Discontinued | Yes | Yes |
| Wifi | - | Yes |
| Frequency Response | - | 40Hz - 20kHz (Manufacturer specified) |
The Two Speakers In Full
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
| 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 |
| Dimensions | 15.75" x 5.91" x 8.46" (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 |
| Output Power | 80W |
| Party Mode | Yes (Up to 50 speakers) |
| Power Bank | Yes |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 9 lbs / 4.1 kg |
- Reviews, Comparisons and Sound Samples
- JOY‘s 3D Audio Show: B&W Zeppelin - audiophile sound quality test 🎧
- 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: B&O Beolit 20 vs Earfun UBoom X - everything fake?
- 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 ?
- Mateusz Cholewa: EarFun UBOOM X Deep Bass 🆚 Tribit Stormbox Blast🎶Review👌
- 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: Earfun UBoom X vs W-King D10 - same price, same sound?
- 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 😝
- 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
- Buy Used
- 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 ZE41
- Earfun Uboom X vs JBL Boombox 4
- See all 19 comparisons
- Links
Harman Kardon Citation 200: $130 Discontinued
Pros: Deeper bass than any Onyx.
Cons: Overly boomy by default, you can short press the Bluetooth and volume down buttons simultaneously to decrease the bass, and the Bluetooth and volume up buttons simultaneously to increase it. Discontinued.
| App | Yes (Harman Kardon app) |
|---|---|
| Aux Input | No |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Built in Microphone | Yes |
| Dimensions | 7.0" x 8.6" x 6.8" (178 x 219 x 172 mm) |
| Discontinued | Yes |
| Drivers | 5" woofer, 1" tweeter |
| EQ | No |
| Frequency Response | 40Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX4 |
| Output Power | 50W |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Partially (1 woofer) |
| TWS | No |
| USB Playback | No |
| Weight | 6.3 lbs / 2.85 kg |
| Wifi | Yes |
- Reviews, Comparisons and Sound Samples
- Buy Used
- Head-to-Head Comparisons
- Links
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC 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.