Short answer: the W-King X20 for output, the Earfun Uboom X for tuning. The X20 claims 200W RMS and 330W peak output, 112dB max volume, a 24-hour battery with power bank and IPX6, but its response rises then rolls off the upper treble with peaks at 700Hz and 1.2kHz. The Oluv-tuned Uboom X at $159.99 against $219.98 is the tuned pick once its out-of-the-box 0.33 firmware and EQ are fixed.
What the Earfun Uboom X gets right: Tuned by Oluv and he knocked it out of the park again. Set against that: The out of the box 0.33 firmware and EQ sounds horrible.
On the W-King X20 side: 200W RMS output with 330W peak power, 112dB max volume, exceptional 24-hour battery life with power bank, IPX6 waterproof. The catch: Rising frequency response but upper treble rolled off, 700Hz and 1.2kHz peaks.
Buy the W-King X20 new; the Earfun Uboom X is no longer sold new, so it only makes sense as a used find.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Earfun Uboom X | W-King X20 | |
|---|---|---|
| Price | $159.99 Discontinued | $219.98 after coupon |
| Ranked | #1 of 75 in Boombox Size Portable Bluetooth Speakers | #30 of 75 in Boombox Size Portable Bluetooth Speakers |
| App | Yes (Earfun Audio app) | Yes (W-King app) |
| Aux Input | Yes | Yes |
| Aux Latency | 16ms | - |
| Bass Extension (-10dB) | ~38Hz | ~42Hz |
| Battery Life | 30 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | AAC, SBC | SBC |
| Built-in Microphone | Yes | No |
| EQ | Yes (App EQ) | Yes (App + button modes) |
| IP Rating | IP67 | IPX6 |
| Bluetooth Latency | SBC Video mode 48ms, AAC Video mode 128ms, SBC 112ms, AAC 176ms | - |
| Maximum SPL | 110dB (measured by Alan Ross Reviews) | 112dB (measured by Alan Ross Reviews) |
| Party Mode | Yes (Party Connect mode, up to 50 speakers) | No |
| Power Bank | Yes (USB-C) | Yes (USB-A) |
| Power Input | USB-C | USB-C |
| TWS | Yes | Yes |
| Weight | 9 lbs (4.1 kg) | 15.9 lbs (7200 g) |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| USB Playback | No | Yes |
| FM Tuner | No | - |
| Bluetooth Version | 5.3 | 5.4 |
| Amplifier Power | 80W | 330W peak / 200W RMS |
| Dimensions | 15.7" x 5.9" x 8.5" (400 x 150 x 215 mm) | 19.9" x 8.5" x 10.6" (506 x 217 x 270 mm) |
| Drivers | 2x 102mm (4") woofers + 2x 20mm tweeters | 7.5" subwoofer + drivers |
| Discontinued | Yes | - |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| MicroSD Playback | - | Yes |
Related Speaker Comparisons
More worthwhile head-to-heads for Earfun Uboom X:
- 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 September 23, 2026 at 11:24 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 Myearfun eBay
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. 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 →
| 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 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 |
| 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: 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 ? 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: 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 😝 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
- 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 26 comparisons
W-King X20: $219.98 after coupon Amazon eBay
Pros: 200W RMS output with 330W peak power, 112dB max volume, exceptional 24-hour battery life with power bank, IPX6 waterproof, EQ with app control and button modes, 7.5-inch subwoofer, Bluetooth 5.3, dual pairing, MicroSD and USB playback, AUX input, TWS stereo mode with 240W combined. Measured bass extension of ~42Hz (-10dB).
Cons: Rising frequency response but upper treble rolled off, 700Hz and 1.2kHz peaks
Full W-King X20 review and specifications →
| Amplifier Power | 330W peak / 200W RMS |
|---|---|
| App | Yes (W-King app) |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~42Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.4 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 19.9" x 8.5" x 10.6" (506 x 217 x 270 mm) |
| Drivers | 7.5" subwoofer + drivers |
| EQ | Yes (App + button modes) |
| IP Rating | IPX6 |
| Maximum SPL | 112dB (measured by Alan Ross Reviews) |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 15.9 lbs (7200 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: Soundcore Boom 2 Plus Review - worst boombox speaker under $400? More from alanrossreviews →
- Alan Ross Reviews: pound for pound battle! WKing X20 D20 vs Stormbox Blast! OMG its a shocker!
- Alan Ross Reviews: W-King X20 JBL Boombox 3 killer! this should be illegal! - I was shocked!
- Jagist reviews: W-king X20 Vs Jbl Encore!!! 😁😁😁 More from Jagistreviews →
- Jagist reviews: W-king X20 Vs Skullcandy Barrel XT!!! 🤔😋
- Mateusz Cholewa: Soundcore RAVE 3 🤗v🆚s W- KING X20🎶 More from Mateusz Cholewa →
- Jay’s Straight Up Reviews & More: New! W-King X20 vs JBL Boombox 3 🛜 Head to Head 🔋Battery Powered 📊Custom EQ - Links In Description More from JaysStraightUpReviews →
- Jay’s Straight Up Reviews & More: W-King X20 vs Tribit Stormbox Blast 🍿 Garage Battle of Boombox Speakers 🍻Custom & Standard EQ’s
- Jagist reviews: LG xboom Stage 301 Vs W-king X20!!!
- Techder Audios: W-king X20 VS Zealot S95 DEEP BASS VS DEEPER & LOUDER BASS?! More from techderaudios →
- Jagist reviews: LG xboom Stage 301 Vs W-king X20!!!
- Jagist reviews: W-king X20 Vs Gemini GRV-650L!!! 😍😍😍
- Jagist reviews: Bugani Boost Max Vs W-king X20!!! 😍😍😍
- Jay’s Straight Up Reviews & More: W-King X20 vs Zealot S78 Bluetooth Boombox Battle Outdoor Tailgater Special 🚗 Let the Whoopin’ Begin
- Head-to-Head Comparisons