Short answer: the Teufel Rockster Cross, especially for rock and jazz. Its pretty neutral response and larger mid/bass driver make it more vocal and midrange-focused than a JBL Xtreme 4, though Outdoor mode can sound harsh from a 4kHz peak. The Everboom is warm and rolled off with an upper bass boost and not very deep bass, and it may shift as better sound samples arrive.
Buy the Teufel Rockster Cross. It is rated higher for sound quality, and the $100 you would save on the Ultimate Ears Everboom does not close the gap.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Teufel Rockster Cross | Ultimate Ears Everboom | |
|---|---|---|
| Price | $249.99 | $149.99 |
| Ranked | #23 of 97 in Large Size Portable Bluetooth Speakers | #35 of 97 in Large Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 51Hz | - |
| Battery Life | 16 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| IP Rating | IPX5 | IP67 |
| Power Input | DC barrel jack | USB-C |
| TWS | Yes | No |
| Weight | 5.3 lbs (2.4 kg) | 2.1 lbs (949 g) |
| App | No | Yes |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, aptX | SBC |
| Built-in Microphone | Yes | Yes |
| EQ | No | Yes |
| Party Mode | No | Yes (PartyUp up to 50 speakers) |
| Power Bank | Yes (USB-A) | No |
| Stereo | Partially | No |
| Omnidirectional | No | Yes |
| Bluetooth Version | 5.0 | 5.1 |
| Dimensions | 15” x 6.3” x 5.1” (380 x 160 x 130 mm) | 8.1” x 3.3” x 4.3” (205 x 85 x 110 mm) |
| Drivers | 5” woofer, 2x textile dome tweeters + 2x passive radiators | 2x 56.6mm x 56.2mm fullrange transducers + 2x passive radiators |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 30W | 14W |
| 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 3, 2026 at 10:26 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
Teufel Rockster Cross: $249.99 Amazon eBay
Newer model: the Teufel Rockster Cross 2, ranked higher, rated 4.2/5.
Pros: Pretty neutral frequency response. More vocal/midrange-focused than the JBL Xtreme 4, thanks to a larger mid/bass driver: better suited to rock and jazz. Nicer upper-bass detail than the JBL Xtreme 4. Punchy, well-controlled bass that suits rock music, unlike the Soundcore Boom 2 Plus’s overboosted, uncontrolled bass even at stock tuning. Clear, detailed audio with good vocal presence and solid Bluetooth codec support even a couple years after release. Measured bass extension of 51Hz (-10dB).
Cons: Outdoor mode can sound somewhat harsh due to the 4kHz peak. Not as deep or full-sounding in the bass as the JBL Xtreme 4.
Full Teufel Rockster Cross review and specifications →
| Amplifier Power | 30W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 51Hz |
| Battery Life | 16 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, aptX |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 15” x 6.3” x 5.1” (380 x 160 x 130 mm) |
| Drivers | 5” woofer, 2x textile dome tweeters + 2x passive radiators |
| EQ | No |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX5 |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | DC barrel jack |
| Stereo | Partially |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| Weight | 5.3 lbs (2.4 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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- Teufel Rockster Cross vs Soundcore Motion X500
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Ultimate Ears Everboom: $149.99 Amazon eBay
Pros: Ultimate Ears Everboom uses 2x 56.6mm x 56.2mm fullrange transducers + 2x passive radiators. Its 949 g, claimed 20 hours (Manufacturer specified) battery life, IP67 protection, aux input and mono playback make it a practical option for its intended room or portable use.
Cons: Careful placement and volume setting remain important for balanced sound. Warm tuning with an upper-bass boost and rolled-off treble, and the bass does not go very deep.
Full Ultimate Ears Everboom review and specifications →
| Amplifier Power | 14W |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.1 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 8.1” x 3.3” x 4.3” (205 x 85 x 110 mm) |
| Drivers | 2x 56.6mm x 56.2mm fullrange transducers + 2x passive radiators |
| EQ | Yes |
| IP Rating | IP67 |
| Omnidirectional | Yes |
| Party Mode | Yes (PartyUp up to 50 speakers) |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (built-in loop) |
| TWS | No |
| Weight | 2.1 lbs (949 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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