Short answer: the JBL Xtreme 2 for bass, the Ultimate Ears Epicboom for battery life. The Epicboom runs 17 hour and is the first UE portable with USB-C charging, but its bass is not very deep for the size. The Xtreme 2’s four drivers give a refined bass balance closer to studio monitors than typical portables, though it charges from an external AC power brick.
Buy the Ultimate Ears Epicboom new; the JBL Xtreme 2 is no longer sold new, so it only makes sense as a used find.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| JBL Xtreme 2 | Ultimate Ears Epicboom | |
|---|---|---|
| Price | $199.99 Discontinued | $213.41 |
| Ranked | #53 of 93 in Large Size Portable Bluetooth Speakers | #73 of 93 in Large Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 54Hz | ~55Hz |
| Battery Life | 15 hours (Manufacturer specified) | 17 hours (Manufacturer specified) |
| Maximum SPL | 98dB (measured by Alan Ross Reviews) | 94dB (Manufacturer specified) |
| Party Mode | Yes (Connect+ up to 100 speakers) | No |
| TWS | No | Yes |
| Weight | 5.3 lbs (2.4 kg) | 4.3 lbs (1.97 kg) |
| App | No | No |
| Aux Input | Yes | Yes |
| 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 | 4.2 | 5.2 |
| Drivers | 2x 70mm woofers, 2x 20mm tweeters | 1x 120mm woofer, 2x 45mm tweeters |
| Dimensions | 11.3” x 5.4” x 4.2” (287 x 137 x 107 mm) | 4.7” x 9.5” x 6.4” (119 x 241 x 162 mm) |
| Frequency Response | 55Hz - 20kHz (Manufacturer specified) | 50Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 40W RMS | 10W RMS |
| Digital Aux Input | No | No |
| Strap | Yes (detachable shoulder strap) | Yes (built-in loop) |
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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 2: $199.99 Discontinued Amazon eBay
Newer model: the JBL Xtreme 5, ranked higher, rated 4.6/5.
Pros: Four drivers with refined bass balance, closer to studio monitors than typical portables. IPX7 water-resistant. Amazing real-world battery: ~20 hours at 75dB (vs 15hr claim). USB-A port charges other devices. Optional carry strap. Measured bass extension of 54Hz (-10dB).
Cons: External AC power brick for charging. Boosted bass. Treble harsh at high volumes. Discontinued.
Full JBL Xtreme 2 review and specifications →
| Amplifier Power | 40W RMS |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 54Hz |
| Battery Life | 15 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 11.3” x 5.4” x 4.2” (287 x 137 x 107 mm) |
| Drivers | 2x 70mm woofers, 2x 20mm tweeters |
| EQ | No |
| Frequency Response | 55Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Maximum SPL | 98dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (Connect+ up to 100 speakers) |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (detachable shoulder strap) |
| TWS | No |
| Weight | 5.3 lbs (2.4 kg) |
- Links
- Reviews, Comparisons and Sound Samples
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- Ezekielo: JBL Xtreme 2 vs Sonos Move with Sound Comparison
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- 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. 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 →
| 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: 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 😧
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