Different classes, so treat this as a step-up-or-not question rather than a head-to-head. The Teufel Rockster Cross ranks #23 of 82 large speakers by sound quality at $199.99; the JBL Boombox 4 ranks #20 of 76 boombox speakers by sound quality at $429.95.
Why pick the Teufel Rockster Cross: Pretty neutral frequency response. Watch for: Outdoor mode can sound somewhat harsh due to the 4kHz peak.
Why pick the JBL Boombox 4: Pretty insane output capability for the size. Watch for: Pretty overpriced for the category.
Buy the Teufel Rockster Cross ($199.99) for a large speaker; the JBL Boombox 4 ($429.95) suits a boombox speaker instead.
There is a real battery-life gap here: the JBL Boombox 4 is rated for 28 hours, the Teufel Rockster Cross only 16 hours.
If water resistance matters to you, the JBL Boombox 4 at IP68 (extended submersion) holds up far better than the Teufel Rockster Cross at IPX5 (water jets).
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Teufel Rockster Cross | JBL Boombox 4 | |
|---|---|---|
| Price | $199.99 | $429.95 |
| Ranked | #23 of 82 in Large Size Portable Bluetooth Speakers | #20 of 76 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | No |
| Bass Extension (-10dB) | 51Hz | 41Hz |
| Battery Life | 16 hours (Manufacturer specified) | 28 hours (Manufacturer specified) |
| IP Rating | IPX5 | IP68 |
| Power Input | DC barrel jack | AC Power cord |
| TWS | Yes | Yes |
| Weight | 5.3 lbs (2.4 kg) | 13.2 lbs (5.98 kg) |
| App | No | Yes |
| Bluetooth Codecs | SBC, aptX | SBC, LC3, AAC |
| Built-in Microphone | Yes | No |
| EQ | No | Yes (7 band) |
| Party Mode | No | Yes (Auracast) |
| Power Bank | Yes (USB-A) | Yes (USB-C, up to 30W) |
| Stereo | Partially | Yes |
| Omnidirectional | No | No |
| Bluetooth Version | 5.0 | 5.4 |
| Dimensions | 15” x 6.3” x 5.1” (380 x 160 x 130 mm) | 20.1” x 10.2” x 8.3” (510 x 260 x 210 mm) |
| Drivers | 5” woofer, 2x textile dome tweeters + 2x passive radiators | 2x 123mm woofers + 2x 20mm tweeters with passive radiators |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 30W | 210W AC / 200W battery |
| Digital Aux Input | No | Yes (USB-C) |
| Strap | Yes (detachable shoulder strap) | No |
| Bluetooth Latency | - | AAC 144ms, SBC 48ms |
| Maximum SPL | - | 115dB (measured by Alan Ross Reviews) |
| Removable Battery | - | Yes |
| USB Playback | - | No |
| FM Tuner | - | No |
| Microphone Input | - | No |
| MicroSD Playback | - | No |
Related Speaker Comparisons
How JBL Boombox 4 compares with other leading options:
- Earfun Uboom X vs JBL Boombox 4
- JBL Boombox 4 vs Tribit Stormbox Blast
- Harman Kardon Go + Play 3 vs JBL Boombox 4
- JBL Boombox 4 vs JBL Partybox Encore 2
- JBL Boombox 4 vs JBL Partybox Encore Essential 2
Prices on this page were last checked September 26, 2026 at 11:14 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: $199.99 Amazon eBay
Newer model: the Teufel Rockster Cross 2, 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 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
- Teufel Rockster Cross vs Bogasing S8 Pro Max
- Teufel Rockster Cross vs Teufel Rockster Cross 2
- Teufel Rockster Cross vs Soundcore Rave Neo 2
- Teufel Rockster Cross vs Bose SoundLink Plus
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- Teufel Rockster Cross vs Soundcore Motion X600
- Teufel Rockster Cross vs Soundcore Motion X500
- See all 52 comparisons
JBL Boombox 4: $429.95 Amazon B&H Photo Video eBay
Older models: the JBL Boombox 3 (rated 3.8/5), the JBL Boombox 2 (rated 3.5/5) and the JBL Boombox (rated 2.9/5).
Pros: Pretty insane output capability for the size. IP68 protection and Auracast pairing with other current JBL speakers. Measured bass extension of 41Hz (-10dB).
Cons: Pretty overpriced for the category. Better than the Boombox 3 mostly because there are more 7 EQ bands instead of just 3 and it can be better tuned. Try Oluv’s EQ for it. Out of the box sounds worse than the Boombox 3. No Aux input.
Full JBL Boombox 4 review and specifications →
| Amplifier Power | 210W AC / 200W battery |
|---|---|
| App | Yes |
| Aux Input | No |
| Bass Extension (-10dB) | 41Hz |
| Battery Life | 28 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, LC3, AAC |
| Bluetooth Latency | AAC 144ms, SBC 48ms |
| Bluetooth Version | 5.4 |
| Built-in Microphone | No |
| Digital Aux Input | Yes (USB-C) |
| Dimensions | 20.1” x 10.2” x 8.3” (510 x 260 x 210 mm) |
| Drivers | 2x 123mm woofers + 2x 20mm tweeters with passive radiators |
| EQ | Yes (7 band) |
| FM Tuner | No |
| IP Rating | IP68 |
| Maximum SPL | 115dB (measured by Alan Ross Reviews) |
| MicroSD Playback | No |
| Microphone Input | No |
| Omnidirectional | No |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB-C, up to 30W) |
| Power Input | AC Power cord |
| Removable Battery | Yes |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| USB Playback | No |
| Weight | 13.2 lbs (5.98 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- JOY‘s 🎧3D🔈Audio-Show: JBL Boombox 4 vs Boombox 3 - old one sounding better? 🤔 More from Oluv’Sone →
- JOY‘s 🎧3D🔈Audio-Show: JBL Boombox 4 vs Earfun UBoom X - sound test
- JOY‘s 🎧3D🔈Audio-Show: JBL Boombox 4 vs Boombox 3 - any improvement?
- JOY‘s 🎧3D🔈Audio-Show: JBL Boombox 4 vs Partybox Encore 2 - outdoor loudness & basstest
- JOY‘s 🎧3D🔈Audio-Show: JBL Boombox 4 - finally a real BOOMbox from JBL 👏
- Alan Ross Reviews: JBL Boombox 4 HUMILIATES Brane X?! Ultimate Bass Battle! More from alanrossreviews →
- Alan Ross Reviews: JBL Boombox 4 Compared to Boombox 3 & 3 WiFi – Worth the Upgrade?
- Alan Ross Reviews: JBL Boombox 4 distortion fest bonanza! how bad can it be lol 🤣
- Jagist reviews: Jbl Boombox 4 Vs Zealot Ze21!!! More from Jagistreviews →
- Techder Audios: JBL Boombox 4 VS Zealot ZE21 BATTLE OF THE BOOMBOXES! More from techderaudios →
- Dominik Reviews: Zealot S89 vs JBL Boombox 4 - JBL Alternative? Sound Test More from Dominik Reviews →
- Jagist reviews: Jbl Boombox 4 Vs Zealot S89!!!
- Jagist reviews: Jbl Boombox 4 Vs Zealot S95!!!
- M1MTechChannel: Welche JBL Partybox ist die BESTE ? Alle Partyboxen im Vergleich | 2026 More from M1MTechChannel →
- M1MTechChannel: JBL BOOMBOX 4 - Einfach komplett GEISTESKRANK
- Head-to-Head Comparisons