Short answer: the Teufel Rockster Cross. It ranks #23 of 115 large speakers by sound quality, rated 4.2/5, at $199.99; the Marshall Stockwell III ranks #79, rated 3.0/5, and costs $249.99, which makes this an easy call rather than a real tradeoff.
The Marshall Stockwell III is the longer-running, lighter choice. A stylish, rugged speaker with a very long battery you can swap yourself, a detailed app EQ, and power bank charging. It is rated for 40 hours of battery against 16 for the Teufel Rockster Cross. At 2.9 lbs (1.3 kg) it weighs much less than the Teufel Rockster Cross at 5.3 lbs (2.4 kg). It has an adjustable EQ, which the Teufel Rockster Cross lacks. The tradeoff: Highs are recessed by default and need the treble control maxed to compensate, still lacking detail even then.
The Teufel Rockster Cross is the better-sounding choice. A splash resistant speaker with fairly neutral, vocal focused sound and punchy, controlled bass that suits rock and jazz. It supports aptX Bluetooth, which the Marshall Stockwell III lacks. Watch for: Outdoor mode can sound somewhat harsh due to the 4kHz peak.
Buy the Teufel Rockster Cross. It is rated higher for sound quality than the Marshall Stockwell III and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Want more options? Browse the full Portable Bluetooth rankings.
A stylish, rugged speaker with a very long battery you can swap yourself, a detailed app EQ, and power bank charging.
A splash resistant speaker with fairly neutral, vocal focused sound and punchy, controlled bass that suits rock and jazz.
Prices on this page were last checked October 31, 2026 at 7:11 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
| Marshall Stockwell III | Teufel Rockster Cross | |
|---|---|---|
| Price | $249.99 | $199.99 |
| Ranked | #79 of 115 in Large Size Portable Bluetooth Speakers | #23 of 115 in Large Size Portable Bluetooth Speakers |
| Drivers | 1x 3” woofer, 2x 1.75” wide-band drivers | 5” woofer, 2x textile dome tweeters + 2x passive radiators |
| Frequency Response | 54Hz - 20kHz (Manufacturer specified) | 50Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 44W | 30W |
| Battery Life | 40+ hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.0 |
| Bluetooth Codecs | SBC, AAC, LE Audio with LC3 | SBC, aptX |
| IP Rating | IP55 | IPX5 |
| Weight | 2.9 lbs (1.3 kg) | 5.3 lbs (2.4 kg) |
| Dimensions | 7.1” x 6.4” x 2.9” (180 x 162 x 74 mm) | 15” x 6.3” x 5.1” (380 x 160 x 130 mm) |
| App | Yes | No |
| EQ | Yes (parametric, via app) | No |
| Aux Input | Yes | Yes |
| Digital Aux Input | No | No |
| Power Bank | Yes | Yes (USB-A) |
| Power Input | USB-C | DC barrel jack |
| Stereo | Partially | Partially |
| Omnidirectional | Yes | No |
| TWS | No | Yes |
| Strap | Yes (detachable strap) | Yes (detachable shoulder strap) |
| Bass Extension (-10dB) | - | 51Hz |
| Built-in Microphone | - | Yes |
| Party Mode | - | No |
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