Short answer: the W-King D9, if you are buying new, though neither ranks well in its class. The Ultimate Ears Megablast ranks higher than it (#87 vs #91 of 105 large speakers, 2.8/5 vs 2.5/5) but is discontinued, so only consider it used; the W-King D9 is still sold new at $71.24. Both are rated below 3.0/5 among the 105 large speakers, so if sound quality matters, consider the Tribit Stormbox Lava instead, ranked #3 at $119.99.
The Ultimate Ears Megablast is the lighter pick. Alexa integration (Wi-Fi + Bluetooth). At 2.4 lbs (1.1 kg) it weighs much less than the W-King D9 at 4.4 lbs (2 kg). Watch for: Bass is not very deep compared to the competition.
The W-King D9 is the deeper-bass, longer-running choice. A compact 4.4 lbs (2 kg) boombox with 60W RMS output, a claimed 106dB maximum level, a measured 47Hz -10dB bass point, IPX6 protection, power-bank output, USB-C charging, aux and microSD playback. Its bass reaches about 47Hz before falling 10dB, against 64Hz for the Ultimate Ears Megablast. It is rated for 40 hours of battery against 16 for the Ultimate Ears Megablast. The catch: Treble rolls off early, limiting air and fine detail, while owner reports note Bluetooth interference and some noise at maximum speaker volume.
Buy the W-King D9 if you want one new; the Ultimate Ears Megablast is discontinued, so only look for it used.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Ultimate Ears Megablast | W-King D9 | |
|---|---|---|
| Price | $240 Discontinued | $71.24 |
| Ranked | #87 of 105 in Large Size Portable Bluetooth Speakers | #91 of 105 in Large Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 64Hz | 47Hz |
| Battery Life | 16 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| Weight | 2.4 lbs (1.1 kg) | 4.4 lbs (2.0 kg) |
| Wi-Fi | Yes | - |
| App | No | No |
| Aux Input | Yes | Yes |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | Yes |
| Voice Assistants | Amazon Alexa | - |
| EQ | No | No |
| IP Rating | IPX7 | IPX6 |
| Party Mode | No | No |
| Power Bank | No | Yes (USB-A) |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | No |
| Bluetooth Version | 4.2 | 5.3 |
| Drivers | 2x 55mm fullrange, 2x 25mm tweeters | 2x 40mm drivers + passive radiators |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | 80Hz - 16kHz (Manufacturer specified) |
| Dimensions | 9.3” x 3.5” (236.2 x 88.9 mm) (height x diameter) | 4.7” x 12.4” x 4.7” (120 x 315 x 120 mm) |
| Digital Aux Input | No | No |
| Maximum SPL | - | 106dB (measured by Alan Ross Reviews) |
| MicroSD Playback | - | Yes |
| Amplifier Power | - | 60W RMS |
| Strap | - | No |
Related Speaker Comparisons
More worthwhile head-to-heads for Ultimate Ears Megablast:
- JBL Xtreme 5 vs Ultimate Ears Megablast
- Tribit Stormbox Lava vs Ultimate Ears Megablast
- Soundcore Boom 2 vs Ultimate Ears Megablast
- Marshall Stockwell II vs Ultimate Ears Megablast
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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
Ultimate Ears Megablast: $240 Discontinued eBay
Pros: Alexa integration (Wi-Fi + Bluetooth). 93dB loudest in UE lineup, 40% louder than Megaboom. IP67 waterproof and drop-proof. 16 hour battery. Party mode connects up to 8 speakers. Can use while charging to keep Alexa on 24/7. Measured bass extension of 64Hz (-10dB).
Cons: Bass is not very deep compared to the competition. Discontinued.
Full Ultimate Ears Megablast review and specifications →
| Released | Oct 2017 (9 years ago) |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 64Hz |
| Battery Life | 16 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 9.3” x 3.5” (236.2 x 88.9 mm) (height x diameter) |
| Drivers | 2x 55mm fullrange, 2x 25mm tweeters |
| EQ | No |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Voice Assistants | Amazon Alexa |
| Weight | 2.4 lbs (1.1 kg) |
| Wi-Fi | Yes |
- Reviews, Comparisons and Sound Samples
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W-King D9: $71.24 Amazon $71.24 eBay
Pros: A compact 2kg boombox with 60W RMS output, a claimed 106dB maximum level, a measured 47Hz -10dB bass point, IPX6 protection, power-bank output, USB-C charging, aux and microSD playback. Long-term owners praise its loud, punchy character and useful indoor/outdoor voicing for casual outdoor listening. Measured bass extension of 47Hz (-10dB).
Cons: Treble rolls off early, limiting air and fine detail, while owner reports note Bluetooth interference and some noise at maximum speaker volume. There is no app or adjustable EQ, and its bass does not reach as deep as larger rivals, so it is better suited to energetic background music than neutral listening.
Full W-King D9 review and specifications →
| Released | Dec 2020 (5 years ago) |
|---|---|
| Amplifier Power | 60W RMS |
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 47Hz |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 4.7” x 12.4” x 4.7” (120 x 315 x 120 mm) |
| Drivers | 2x 40mm drivers + passive radiators |
| EQ | No |
| Frequency Response | 80Hz - 16kHz (Manufacturer specified) |
| IP Rating | IPX6 |
| 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 | No |
| Weight | 4.4 lbs (2.0 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons