Short answer: the Teufel Rockster Go, though neither ranks well in its class. It ranks #114 of 150 medium speakers by sound quality (rated 2.6/5); the TDK A33 ranks #119 (rated 2.5/5). Both are rated below 3.0/5 among the 150 medium speakers; for better sound, the Earfun Uboom L ranks #1 at $49.79.
The case for the Teufel Rockster Go: Clear mid-range with bright treble, wide soundstage via Dynamore processing, IP67 waterproof and durable, solid battery life, compact design with carrying strap. Watch for: Rolled off treble, muffled sound, mids sound strange.
Why pick the TDK A33: TDK A33 uses 2x 1.5-inch full-range + 1x 2.5-inch subwoofer + 2x 3-inch passive radiators. Watch for: Bass is limited by its ~72Hz specification.
One note: the Teufel Rockster Go is discontinued and no longer widely available new.
Buy the Teufel Rockster Go. It is rated higher for sound quality than the TDK A33.
There is a real gap in water resistance: the Teufel Rockster Go at IPX7 (brief submersion) against the TDK A33, which has IP64 (splashing).
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Teufel Rockster Go | TDK A33 | |
|---|---|---|
| Price | €83.00 Discontinued | $199 Discontinued |
| Ranked | #114 of 150 in Medium Size Portable Bluetooth Speakers | #119 of 150 in Medium Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Battery Life | 12 hours (Manufacturer specified) | 6 hours (Manufacturer specified) |
| IP Rating | IPX7 | IP64 |
| Weight | 1.5 lbs (700 g) | 2.8 lbs (1270 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.0 | 2.1 |
| Bluetooth Codecs | aptX, SBC | AAC, SBC |
| Dimensions | 8.3” x 3.9” x 3.9” (210 x 100 x 100 mm) | 9.5” x 3.7” x 2” (241 x 95 x 51 mm) |
| Drivers | 2x 45mm full-range drivers + 1x passive radiator | 2x 1.5-inch full-range + 1x 2.5-inch subwoofer + 2x 3-inch passive radiators |
| TWS | Yes | No |
| Party Mode | Yes (Party Link, 2 devices) | - |
| Built-in Microphone | Yes | Yes |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Digital Aux Input | No | No |
| App | No | No |
| EQ | No | No |
| Power Input | Micro USB | Micro USB |
| Bass Extension (-10dB) | - | ~72Hz |
| Amplifier Power | - | 15W |
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More worthwhile head-to-heads for Teufel Rockster Go:
- JBL Charge 6 vs Teufel Rockster Go
- JBL Flip 7 vs Teufel Rockster Go
- Teufel Rockster Go vs Ultimate Ears Megaboom 3
- Teufel Rockster Go vs Ultimate Ears Wonderboom 4
- Teufel Rockster Go vs Ultimate Ears Wonderboom 3
Prices on this page were last checked September 30, 2026 at 2:57 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 Go: €83.00 Discontinued eBay
Newer model: the Teufel Rockster Go 2, ranked higher, rated 3.2/5.
Pros: Clear mid-range with bright treble, wide soundstage via Dynamore processing, IP67 waterproof and durable, solid battery life, compact design with carrying strap
Cons: Rolled off treble, muffled sound, mids sound strange. Bass not very deep. Only available in Europe. Discontinued.
Full Teufel Rockster Go review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | aptX, SBC |
| Bluetooth Version | 4.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 8.3” x 3.9” x 3.9” (210 x 100 x 100 mm) |
| Drivers | 2x 45mm full-range drivers + 1x passive radiator |
| EQ | No |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Party Mode | Yes (Party Link, 2 devices) |
| Power Input | Micro USB |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.5 lbs (700 g) |
- Links
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons
- Teufel Rockster Go vs Sony SRS-XB30
- Teufel Rockster Go vs Soundcore Flare 2
- Teufel Rockster Go vs Marshall Emberton II
- Teufel Rockster Go vs Marshall Emberton III
- Teufel Rockster Go vs Bose SoundLink Color II
- Teufel Rockster Go vs B&O Beosound Explore
- Teufel Rockster Go vs Tribit Stormbox Mini+
- Teufel Rockster Go vs Sony SRS-XB20
- See all 19 comparisons
TDK A33: $199 Discontinued eBay
Pros: TDK A33 uses 2x 1.5-inch full-range + 1x 2.5-inch subwoofer + 2x 3-inch passive radiators. Its 1270 g, claimed 6 hours (Manufacturer specified) battery life, IP64 protection, aux input and single-box playback make it a practical option for its intended room or portable use. Measured bass extension of ~72Hz (-10dB).
Cons: Bass is limited by its ~72Hz specification. There is no companion app. No EQ adjustment. Discontinued.
Full TDK A33 review and specifications →
| Amplifier Power | 15W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~72Hz |
| Battery Life | 6 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | AAC, SBC |
| Bluetooth Version | 2.1 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 9.5” x 3.7” x 2” (241 x 95 x 51 mm) |
| Drivers | 2x 1.5-inch full-range + 1x 2.5-inch subwoofer + 2x 3-inch passive radiators |
| EQ | No |
| IP Rating | IP64 |
| Omnidirectional | No |
| Power Input | Micro USB |
| Stereo | Yes |
| TWS | No |
| Weight | 2.8 lbs (1270 g) |
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons