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 120 large speakers by sound quality at $199.99; the JBL Boombox 4 ranks #20 of 113 boombox speakers by sound quality at $549.95.
The Teufel Rockster Cross is the lighter pick. A splash resistant speaker with fairly neutral, vocal focused sound and punchy, controlled bass that suits rock and jazz. At 5.3 lbs (2.4 kg) it weighs much less than the JBL Boombox 4 at 13.2 lbs (5.98 kg). It supports aptX Bluetooth, which the JBL Boombox 4 lacks. It keeps a wired aux input, which the JBL Boombox 4 lacks. Watch for: Outdoor mode can sound somewhat harsh due to the 4kHz peak.
The JBL Boombox 4 is the deeper-bass, longer-running option. An extremely loud boombox for its size with fully waterproof, dustproof build, a long battery and a flexible app EQ. Its bass reaches about 41Hz before falling 10dB, against 51Hz for the Teufel Rockster Cross. It is rated for 28 hours of battery against 16 for the Teufel Rockster Cross. It is rated IP68 against IPX5 for the Teufel Rockster Cross. Watch for: Pretty overpriced for the category.
Buy the Teufel Rockster Cross ($199.99) for a large speaker; the JBL Boombox 4 ($549.95) suits a boombox speaker instead.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Prices on this page were last checked November 7, 2026 at 7:34 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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Specifications Side By Side
| Teufel Rockster Cross | JBL Boombox 4 | |
|---|---|---|
| Price | $199.99 | $549.95 |
| Ranked | #23 of 120 in Large Size Portable Bluetooth Speakers | #20 of 113 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 | Yes | 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 |
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