Short answer: the W-King T9. It ranks #50 of 105 large speakers by sound quality, rated 3.6/5, at $111.23; the Ultimate Ears Epicboom ranks #83, rated 2.9/5, and costs $228.59, which makes this an easy call rather than a real tradeoff.
The W-King T9 is the better-sounding, deeper-bass choice. 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. Its bass reaches about 47Hz before falling 10dB, against 55Hz for the Ultimate Ears Epicboom. It is rated for 24 hours of battery against 17 for the Ultimate Ears Epicboom. The catch: Peaks in the upper mids which makes it sound a bit harsh.
The Ultimate Ears Epicboom is the lighter, tougher choice. 17 hour battery with USB-C charging (first UE portable with USB-C). At 4.3 lbs (1.97 kg) it weighs much less than the W-King T9 at 10.1 lbs (4.6 kg). It is rated IPX7, while the W-King T9 has no water resistance. The catch: Not very deep bass for the size.
Buy the W-King T9. It is rated higher for sound quality than the Ultimate Ears Epicboom and costs less, which makes it the one to get unless you need something the other one does better.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| W-King T9 | Ultimate Ears Epicboom | |
|---|---|---|
| Price | $111.23 | $228.59 |
| Ranked | #50 of 105 in Large Size Portable Bluetooth Speakers | #83 of 105 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 |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) | 94dB (Manufacturer specified) |
| 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 | Yes | Yes |
| 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 |
| Amplifier 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 |
| Lights | Yes | - |
| Strap | No | Yes (built-in loop) |
| Frequency Response | - | 50Hz - 20kHz (Manufacturer specified) |
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Prices on this page were last checked October 12, 2026 at 4:13 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: $111.23 Amazon $129.98 AliExpress $111.23 Lowest 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. Measured bass extension of 47Hz (-10dB).
Cons: Peaks in the upper mids which makes it sound a bit harsh.
Full W-King T9 review and specifications →
| Released | Apr 2021 (5 years ago) |
|---|---|
| Amplifier Power | 80W |
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 47Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth | Yes |
| 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 |
| Lights | Yes |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| Weight | 10.1 lbs (4.6 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: W-King T9 or Soundcore Motion Boom - King vs World Champion! 👌 More from alanrossreviews →
- Alan Ross Reviews: W King T11 party boombox and Karaoke machine review vs T9, Stormbox Blast and Boombox 3.
- Alan Ross Reviews: W-King t9 party speaker vs Soundcore Rave Neo and Trance (Rave Mega) 🥳
- 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 →
- Head-to-Head Comparisons
Ultimate Ears Epicboom: $228.59 Amazon $228.59 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. Measured bass extension of ~55Hz (-10dB).
Cons: Not very deep bass for the size. Gets distorted at around 70-80% with bass thuds.
Full Ultimate Ears Epicboom review and specifications →
| Released | Sep 2023 (3 years ago) |
|---|---|
| Amplifier Power | 10W RMS |
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~55Hz |
| Battery Life | 17 hours (Manufacturer specified) |
| Bluetooth | Yes |
| 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 |
| Maximum SPL | 94dB (Manufacturer specified) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (built-in loop) |
| TWS | Yes |
| Weight | 4.3 lbs (1.97 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Jay’s Straight Up Reviews & More: $350 Ultimate Ears EpicBoom gets Epic Beat-Down 😮by $120 Soundcore Rave Neo 2. Bluetooth Speaker KO🤛 More from JaysStraightUpReviews →
- Jay’s Straight Up Reviews & More: Bose SoundLink Max vs. Ultimate Ears EpicBoom 🤑Big Bucks No Whammies? 💣 Let’s Find Out 😧
- Jay’s Straight Up Reviews & More: Bass Check 💣 Treblab HD-360, Ultimate Ears EpicBoom, Marshall Middleton & JBL Pulse 5. Boom or Bust?
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