Short answer: the W-King T9. It ranks #38 of 77 large speakers by sound quality at $130; the Ultimate Ears Epicboom ranks #57 and costs $213.41, which makes this an easy call rather than a real tradeoff.
What the W-King T9 offers: 80W output power, 106dB max volume, 24-hour battery life, power bank function, Bluetooth 5.3 with 100ft range, TWS stereo pairing with wireless microphone, dual subwoofers, RGB lighting, MicroSD and AUX support, USB-C charging, karaoke capability Watch for: Peaks in the upper mids which makes it sound a bit harsh.
What the Ultimate Ears Epicboom offers: 17 hour battery with USB-C charging (first UE portable with USB-C). IP67 rating, floats in water. Made mostly from recycled fabric and plastic. Large best-sounding UE portable that still feels portable. 180ft Bluetooth range. Watch for: Not very deep bass for the size. Gets distorted at around 70-80% with bass thuds.
Buy the W-King T9. It ranks higher for sound quality than the Ultimate Ears Epicboom and costs less, so the other one has nothing left to offer.
Water resistance is not close: the Ultimate Ears Epicboom is rated at IPX7 (brief submersion), well ahead of the W-King T9 at no water resistance.
Specifications Side By Side
| W-King T9 | Ultimate Ears Epicboom | |
|---|---|---|
| Price | $130 | $213.41 |
| Ranked | #38 of 77 in Large Size Portable Bluetooth Speakers | #57 of 77 in Large Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 47Hz | ~55Hz |
| Battery Life | 24 hours (Manufacturer specified) | 17 hours (Manufacturer specified) |
| IP Rating | None | IPX7 |
| Max Volume | 106dB | 94dB |
| MicroSD Playback | Yes | - |
| Power Bank | Yes (USB-A) | No |
| TWS | Yes | Yes |
| Weight | 10.1 lbs / 4.6 kg | 4.3 lbs / 1.97 kg |
| App | No | No |
| Bluetooth Codecs | SBC | SBC |
| Built in Microphone | Yes | Yes |
| EQ | No | No |
| Party Mode | No | No |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Bluetooth Version | 5.3 | 5.2 |
| Output Power | 80W | 10W RMS |
| Dimensions | 11.8" x 5.9" x 4.7" (300 x 150 x 120 mm) | 4.7" x 9.5" x 6.4" (119 x 241 x 162 mm) |
| Drivers | 2x 4.04" subwoofers + drivers | 1x 120mm woofer, 2x 45mm tweeters |
| Digital Aux Input | No | No |
| Frequency Response | - | 50Hz - 20kHz (Manufacturer specified) |
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- Harman Kardon Citation 200 vs Ultimate Ears Epicboom
- Ultimate Ears Epicboom vs LG Xboom XG7
Prices on this page were last checked August 27, 2026 at 10:09 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
W-King T9: $130 Amazon Aliexpress eBay
Pros: 80W output power, 106dB max volume, 24-hour battery life, power bank function, Bluetooth 5.3 with 100ft range, TWS stereo pairing with wireless microphone, dual subwoofers, RGB lighting, MicroSD and AUX support, USB-C charging, karaoke capability
Cons: Peaks in the upper mids which makes it sound a bit harsh.
Full W-King T9 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 47Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 11.8" x 5.9" x 4.7" (300 x 150 x 120 mm) |
| Drivers | 2x 4.04" subwoofers + drivers |
| EQ | No |
| IP Rating | None |
| Max Volume | 106dB |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Output Power | 80W |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 10.1 lbs / 4.6 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: W-King t9 party speaker vs Soundcore Rave Neo and Trance (Rave Mega) 🥳 More from alanrossreviews →
- Alan Ross Reviews: W-King T9 or Soundcore Motion Boom - King vs World Champion! 👌
- Jay’s Straight Up Reviews & More: W-King T9 🆚 ONN Large Party Speaker -By Request for Big Tee. Can the Smaller T9 Hang With The ONN? More from JaysStraightUpReviews →
- Reddit Search for W-King T9 Review
- Head-to-Head Comparisons
Ultimate Ears Epicboom: $213.41 Amazon eBay
Pros: 17 hour battery with USB-C charging (first UE portable with USB-C). IP67 rating, floats in water. Made mostly from recycled fabric and plastic. Large best-sounding UE portable that still feels portable. 180ft Bluetooth range.
Cons: Not very deep bass for the size. Gets distorted at around 70-80% with bass thuds.
Full Ultimate Ears Epicboom review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | ~55Hz |
| Battery Life | 17 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.2 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 4.7" x 9.5" x 6.4" (119 x 241 x 162 mm) |
| Drivers | 1x 120mm woofer, 2x 45mm tweeters |
| EQ | No |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Max Volume | 94dB |
| Omnidirectional | No |
| Output Power | 10W RMS |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 4.3 lbs / 1.97 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Jay’s Straight Up Reviews & More: Bass Check 💣 Treblab HD-360, Ultimate Ears EpicBoom, Marshall Middleton & JBL Pulse 5. Boom or Bust? More from JaysStraightUpReviews →
- Jay’s Straight Up Reviews & More: $350 Ultimate Ears EpicBoom gets Epic Beat-Down 😮by $120 Soundcore Rave Neo 2. Bluetooth Speaker KO🤛
- Jay’s Straight Up Reviews & More: Bose SoundLink Max vs. Ultimate Ears EpicBoom 🤑Big Bucks No Whammies? 💣 Let’s Find Out 😧
- Reddit Search for Ultimate Ears Epicboom Review
- Head-to-Head Comparisons
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- Ultimate Ears Epicboom vs Soundcore Rave Neo
- See all 38 comparisons