Short answer: it’s essentially a tie, so pick based on what you actually need. The Rockster Air ranks #11 of 17 party speakers, one spot ahead of the Soundboks 4 at #10, a gap too small to call a clear winner on sound alone. The Teufel Rockster Air is discontinued; its replacement is the Teufel Rockster Air 2. If you are buying new, get the Teufel Rockster Air 2.
The Soundboks 4 is built to be the loudest thing at the party. It’s tied for the loudest battery-powered speaker in its class and reaches 126dB, well past the Rockster Air’s 115dB. Its notes acknowledge it isn’t as neutral or as deep in the bass as the top Partyboxes, and it doesn’t offer stereo output on its own, but it holds an IP65 rating for water jets that the Rockster Air, with no water resistance at all, cannot match.
The Rockster Air answers with battery life, guitar-amp versatility, and true stereo pairing. Its notes describe an exceptional 58-hour battery life (31 hours at full volume in ECO mode) with a user-replaceable pack, tight bass, and clean full-range output that works as a legitimate guitar practice amp through its XLR mic and instrument inputs. Two units can link wirelessly for real stereo separation, something the single-cabinet Soundboks 4 can’t do by itself. The tradeoff is a peaky, not especially natural midrange and distortion that sets in above half volume.
Feature-wise they split along expected lines: the Soundboks 4 has an app and adjustable EQ that the Rockster Air lacks entirely, while the Rockster Air adds aptX Bluetooth and a USB-C power bank output that the Soundboks 4 doesn’t offer.
Buy the Soundboks 4 if you want the loudest, most weather-resistant option and can live without stereo pairing or a companion app on the Rockster Air’s side.
Buy the Teufel Rockster Air if a longer battery, true stereo pairing, and guitar-amp functionality matter more to you than outright loudness, and you can still find one where it was sold.
Still deciding? The full PA & Live Sound rankings cover every ranked option.
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
| Soundboks 4 | Teufel Rockster Air | |
|---|---|---|
| Price | $1199 | €500 Discontinued |
| Ranked | #10 of 17 in Battery-Powered PA Speakers | #11 of 17 in Battery-Powered PA Speakers |
| Passive | No | No |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 52Hz | ~52Hz |
| Battery Life | 40 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC | aptX, SBC |
| Bluetooth Version | 5.0 | 4.0 |
| Dimensions | 25.6” x 17” x 13” (650.2 x 431.8 x 330.2 mm) | 11.8” x 21.3” x 11” (300 x 540 x 280 mm) |
| Drivers | 2x 10” woofers, 1” compression driver | 2x 40mm tweeters + 2x 50mm woofers + passive radiators |
| EQ | Yes | No |
| Frequency Response | 40Hz - 20kHz (Manufacturer specified) | 50Hz - 20kHz (Manufacturer specified) |
| Guitar Input | Yes | Yes |
| IP Rating | IP65 | None |
| Inputs | 2x XLR/6.3mm combo (mic/instrument), 3.5mm stereo, Bluetooth | XLR microphone, 6.3mm instrument, 3.5mm stereo, Bluetooth |
| Maximum SPL | 126dB | 115dB |
| Microphone Input | Yes | Yes |
| XLR Input | Yes (2x combo) | Yes |
| Party Mode | Yes (TeamUp, up to 5 speakers) | No |
| Power Bank | No | Yes (USB-C, 5V/2A) |
| Power Input | AC Power cord | AC Power cord |
| Removable Battery | Yes | - |
| SKAA | Yes | - |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | No |
| USB Playback | No | No |
| Weight | 34 lbs (15.4 kg) | 32 lbs (14.5 kg) |
| Amplifier Power | 216W (3x 72W) | 250W |
| Digital Aux Input | No | No |
| Configuration | Battery-powered 3-way active PA | Battery-powered active PA |
| Cabinet Material | Poplar plywood | Plastic and MDF |
| DSP | App EQ | No |
| Bluetooth | Yes | Yes |
| Rigging | 35mm pole mount socket | 35mm pole mount |
| RCA Input | - | No |
| TRS Input | - | Yes |
| Optical Input | - | No |
| Coaxial Input | - | No |
| USB Input | - | No |
| HDMI Input | - | No |
| AES Input | - | No |
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