Short answer: the Megablast for Alexa and connectivity, the JBL Xtreme for battery life. The Megablast adds Alexa over Wi-Fi and Bluetooth, but its bass is not very deep compared to the competition. The Xtreme’s 15-hour battery is the counterweight, though it has issues with bass distortion at high volumes.
Buy the JBL Xtreme only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, start with the Tribit Stormbox Lava instead.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| JBL Xtreme | Ultimate Ears Megablast | |
|---|---|---|
| Price | $200 Discontinued | $240 Discontinued |
| Ranked | #63 of 93 in Large Size Portable Bluetooth Speakers | #77 of 93 in Large Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Battery Life | 15 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Connect) | No |
| TWS | No | Yes |
| Weight | 5.3 lbs (2.4 kg) | 2.4 lbs (1.1 kg) |
| App | No | No |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | Yes |
| EQ | No | No |
| IP Rating | IPX7 | IPX7 |
| Power Bank | No | No |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Bluetooth Version | 4.1 | 4.2 |
| Drivers | 2x 63mm woofers, 2x 35mm tweeters | 2x 55mm fullrange, 2x 25mm tweeters |
| Dimensions | 11.1” x 5” x 4.8” (283 x 126 x 122 mm) | 9.3” x 3.5” (236.2 x 88.9 mm) (height x diameter) |
| Frequency Response | 70Hz - 20kHz (Manufacturer specified) | 60Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 40W | - |
| Digital Aux Input | No | No |
| Bass Extension (-10dB) | - | 64Hz |
| Wi-Fi | - | Yes |
| Voice Assistants | - | Amazon Alexa |
Related Speaker Comparisons
More worthwhile head-to-heads for JBL Xtreme:
- JBL Xtreme 5 vs JBL Xtreme
- Tribit Stormbox Lava vs JBL Xtreme
- Soundcore Boom 2 vs JBL Xtreme
- Marshall Stockwell II vs JBL Xtreme
- Harman Kardon Citation 200 vs JBL Xtreme
Prices on this page were last checked October 2, 2026 at 10:18 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
JBL Xtreme: $200 Discontinued eBay
Newer model: the JBL Xtreme 5, ranked higher, rated 4.6/5.
Pros: 15 hour battery. IPX7 water resistance. JBL Connect for pairing with other JBL speakers. Built-in microphone for calls.
Cons: Issues with bass distortion at high volumes. An older speaker outclassed by newer releases of the Xtreme. External AC power brick for charging. Discontinued.
Full JBL Xtreme review and specifications →
| Amplifier Power | 40W |
|---|---|
| App | No |
| Aux Input | Yes |
| Battery Life | 15 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.1 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 11.1” x 5” x 4.8” (283 x 126 x 122 mm) |
| Drivers | 2x 63mm woofers, 2x 35mm tweeters |
| EQ | No |
| Frequency Response | 70Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (Connect) |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | No |
| Weight | 5.3 lbs (2.4 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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 →
| 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
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
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