Short answer: the JBL Xtreme for battery, the UE Epicboom for charging. The Epicboom runs 17 hours with USB-C, the first UE portable to use it, but its bass is not very deep for the size. The Xtreme’s 15-hour battery is close, though it has issues with bass distortion at high volumes.
Buy the Ultimate Ears Epicboom if you want one new; the JBL Xtreme is discontinued, so only look for it used.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| JBL Xtreme | Ultimate Ears Epicboom | |
|---|---|---|
| Price | $200 Discontinued | $213.41 |
| Ranked | #63 of 93 in Large Size Portable Bluetooth Speakers | #73 of 93 in Large Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Battery Life | 15 hours (Manufacturer specified) | 17 hours (Manufacturer specified) |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) | 94dB (Manufacturer specified) |
| Party Mode | Yes (Connect) | No |
| TWS | No | Yes |
| Weight | 5.3 lbs (2.4 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 |
| IP Rating | IPX7 | IPX7 |
| Power Bank | No | No |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Bluetooth Version | 4.1 | 5.2 |
| Drivers | 2x 63mm woofers, 2x 35mm tweeters | 1x 120mm woofer, 2x 45mm tweeters |
| Dimensions | 11.1” x 5” x 4.8” (283 x 126 x 122 mm) | 4.7” x 9.5” x 6.4” (119 x 241 x 162 mm) |
| Frequency Response | 70Hz - 20kHz (Manufacturer specified) | 50Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 40W | 10W RMS |
| Digital Aux Input | No | No |
| Bass Extension (-10dB) | - | ~55Hz |
| Strap | - | Yes (built-in loop) |
Related Speaker Comparisons
How JBL Xtreme compares with other leading options:
- JBL Xtreme 5 vs JBL Xtreme
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- 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 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
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