Short answer: the Teufel Rockster Cross 2. It ranks #22 of 82 large speakers by sound quality (rated 4.2/5); the Marshall Stockwell III ranks #59 (rated 3.0/5).
The Cross 2 is the better sounding speaker. It sounds almost identical to the original Cross, which is fairly neutral with punchy bass, and its app EQ adds more bass punch. The Stockwell III sounds muffled by default, with recessed highs even with the treble maxed, boomy bass, and harshness well below maximum volume.
Battery: both last a very long time, 40 hours or more for the Stockwell III and 38 for the Cross 2, or 46 in Eco Mode. The Stockwell III’s battery is user replaceable.
Size: the Stockwell III weighs 1.3 kg against 2.4 kg for the Cross 2.
Features: both have an aux input and a power bank. The Stockwell III has a parametric app EQ and IP55. The Cross 2 has IPX5, multipoint, a USB-C sound card and Party Link.
Buy the Teufel Rockster Cross 2. It is rated higher for sound quality than the Marshall Stockwell III.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Teufel Rockster Cross 2 | Marshall Stockwell III | |
|---|---|---|
| Price | €249.99 | $249.99 |
| Ranked | #22 of 82 in Large Size Portable Bluetooth Speakers | #59 of 82 in Large Size Portable Bluetooth Speakers |
| App | Yes (Teufel Go) | Yes |
| Aux Input | Yes | Yes |
| Battery Life | 38 hours (Manufacturer specified) | 40+ hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC | SBC, AAC, LE Audio with LC3 |
| Bluetooth Version | 5.3 | 5.3 |
| Dimensions | 15.4” x 5.9” x 5.1” (390 x 150 x 130 mm) | 7.1” x 6.4” x 2.9” (180 x 162 x 74 mm) |
| Digital Aux Input | Yes (USB-C) | No |
| Drivers | 120mm woofer, 2x 20mm textile dome tweeters + 2x passive radiators | 1x 3” woofer, 2x 1.75” wide-band drivers |
| EQ | Yes (bass and treble, presets) | Yes (parametric, via app) |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) | 54Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX5 | IP55 |
| Maximum SPL | 101dB (measured by M1M Tech Channel) | - |
| Amplifier Power | 40W RMS | 44W |
| Omnidirectional | No | Yes |
| Party Mode | Yes (Party Link, up to 100 speakers) | - |
| Power Bank | Yes (USB-C) | Yes |
| Power Input | USB-C | USB-C |
| Stereo | Partially | Partially |
| TWS | Yes (Party Link Stereo) | No |
| Weight | 5.3 lbs (2.4 kg) | 2.9 lbs (1.3 kg) |
| Strap | Yes (adjustable strap) | Yes (detachable strap) |
Related Speaker Comparisons
How Teufel Rockster Cross 2 compares with other leading options:
- JBL Xtreme 5 vs Teufel Rockster Cross 2
- Tribit Stormbox Lava vs Teufel Rockster Cross 2
- Soundcore Boom 2 vs Teufel Rockster Cross 2
- Marshall Stockwell II vs Teufel Rockster Cross 2
- Bose SoundLink Max vs Teufel Rockster Cross 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 2: €249.99 Teufel eBay
Older model: the Teufel Rockster Cross (rated 4.2/5).
Pros: Keeps the original Rockster Cross’s sound, which was fairly neutral and vocal focused with punchy, well controlled bass, and the new Teufel Go app EQ gets noticeably more bass punch out of it than the original could manage. Claimed battery life more than doubles to 38 hours, or 46 in Eco Mode. USB-C charging with a power bank output and a built-in USB-C sound card, a 3.5mm aux input, multipoint pairing, AAC, and Party Link for a true stereo pair or up to 100 current Teufel speakers.
Cons: It uses the same drivers and amplifier as the 2018 original, so without EQ the two sound almost identical, even at maximum volume, and it measured about the same 101dB. In a direct comparison it struggles somewhat against the Soundcore Boom 2. aptX was dropped, water protection is still only IPX5 (water jets, not submersion), Party Link does not work with the original Cross, and the app’s bass and treble controls are limited. It is not sold in the US.
Full Teufel Rockster Cross 2 review and specifications →
| Amplifier Power | 40W RMS |
|---|---|
| App | Yes (Teufel Go) |
| Aux Input | Yes |
| Battery Life | 38 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC |
| Bluetooth Version | 5.3 |
| Digital Aux Input | Yes (USB-C) |
| Dimensions | 15.4” x 5.9” x 5.1” (390 x 150 x 130 mm) |
| Drivers | 120mm woofer, 2x 20mm textile dome tweeters + 2x passive radiators |
| EQ | Yes (bass and treble, presets) |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX5 |
| Maximum SPL | 101dB (measured by M1M Tech Channel) |
| Omnidirectional | No |
| Party Mode | Yes (Party Link, up to 100 speakers) |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Stereo | Partially |
| Strap | Yes (adjustable strap) |
| TWS | Yes (Party Link Stereo) |
| Weight | 5.3 lbs (2.4 kg) |
- Links
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- Head-to-Head Comparisons
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Marshall Stockwell III: $249.99 Marshall eBay
Older model: the Marshall Stockwell II (rated 4.5/5).
Pros: 40+ hour battery life with a user-replaceable battery, strap, sleeve and grilles. Doubles as a USB-C power bank. IP55 dust/water resistance. App includes parametric EQ, a Soundstage widening control, and wall/corner placement compensation. Endless-rotation control knobs.
Cons: Highs are recessed by default and need the treble control maxed to compensate, still lacking detail even then. Bass tends to sound resonant and boomy, with reported frequency cancellation and phase issues on complex material that EQ doesn’t fully resolve. Oluv’s A/B testing against the outgoing Stockwell II finds the default tuning muffled and muddy enough to prefer the seven-year-old original out of the box, and output loses dynamics and bass while turning harsh well below maximum volume. No aptX support.
Full Marshall Stockwell III review and specifications →
| Amplifier Power | 44W |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Battery Life | 40+ hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LE Audio with LC3 |
| Bluetooth Version | 5.3 |
| Digital Aux Input | No |
| Dimensions | 7.1” x 6.4” x 2.9” (180 x 162 x 74 mm) |
| Drivers | 1x 3” woofer, 2x 1.75” wide-band drivers |
| EQ | Yes (parametric, via app) |
| Frequency Response | 54Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP55 |
| Omnidirectional | Yes |
| Power Bank | Yes |
| Power Input | USB-C |
| Stereo | Partially |
| Strap | Yes (detachable strap) |
| TWS | No |
| Weight | 2.9 lbs (1.3 kg) |
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