Short answer: the Teufel Rockster Go for sound quality, the Sony SRS-XB30 for charging your phone, though neither ranks well in its class. The Go is IP67 and durable with a wide soundstage from Dynamore processing, though its bass is not very deep and its treble is rolled off. The XB30 is only IPX5 but doubles as a power bank and claims up to 24 hours at moderate volume, with the caveat that reviewers found it muffled and worse than an XB20. Both are rated below 3.0/5 among the 157 medium speakers; for better sound, the Earfun Uboom L ranks #1 at $49.79.
Buy the Teufel Rockster Go or the Sony SRS-XB30, whichever you find used in better condition; both are discontinued. For a new speaker, start with the Earfun Uboom L instead.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Teufel Rockster Go | Sony SRS-XB30 | |
|---|---|---|
| Price | €83.00 Discontinued | $199 Discontinued |
| Ranked | #119 of 157 in Medium Size Portable Bluetooth Speakers | #120 of 157 in Medium Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Battery Life | 12 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| IP Rating | IPX7 | IPX5 |
| Weight | 1.5 lbs (700 g) | 2.2 lbs (1000 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.0 | 4.2 |
| Bluetooth Codecs | aptX, SBC | SBC, AAC, LDAC |
| Dimensions | 8.3” x 3.9” x 3.9” (210 x 100 x 100 mm) | 9” x 3.2” x 3.4” (228 x 82 x 86 mm) |
| Drivers | 2x 45mm full-range drivers + 1x passive radiator | 2x 48mm full-range drivers + 2x passive radiators |
| TWS | Yes | Yes |
| Party Mode | Yes (Party Link, 2 devices) | Yes (Partychain up to 100 speakers) |
| Built-in Microphone | Yes | Yes |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Digital Aux Input | No | No |
| App | No | Yes (Sony Music Center) |
| EQ | No | - |
| Power Input | Micro USB | Micro USB |
| Bass Extension (-10dB) | - | 55Hz |
| Amplifier Power | - | 20W |
| Maximum SPL | - | 95dB (Manufacturer specified) |
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Prices on this page were last checked October 3, 2026 at 10:26 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 Soundcore Flare 2
- Teufel Rockster Go vs Marshall Emberton II
- Teufel Rockster Go vs Marshall Emberton III
- Teufel Rockster Go vs TDK A33
- 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
Sony SRS-XB30: $199 Discontinued eBay
Newer model: the Sony ULT Field 3, ranked higher, rated 3.4/5.
Pros: A compact 1kg portable with IPX5 splash protection, aux input, LDAC/AAC support, Sony’s app, speakerphone capability, power-bank output, stereo pairing and Party Chain linking. It reaches a useful 95dB maximum level and has a claimed 24-hour battery life at moderate volume, making it a convenient older outdoor option. Measured bass extension of 55Hz (-10dB).
Cons: Independent lab listening rates music fidelity only fair: bass has impact but is boomy and lacks the deepest notes, while the midrange can sound hazy, muffled and grainy. Its micro-USB charging and older Bluetooth 4.2 platform now feel dated, so it is best considered for features and used-market value rather than sound quality. Discontinued.
Full Sony SRS-XB30 review and specifications →
| Amplifier Power | 20W |
|---|---|
| App | Yes (Sony Music Center) |
| Aux Input | Yes |
| Bass Extension (-10dB) | 55Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 4.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 9” x 3.2” x 3.4” (228 x 82 x 86 mm) |
| Drivers | 2x 48mm full-range drivers + 2x passive radiators |
| IP Rating | IPX5 |
| Maximum SPL | 95dB (Manufacturer specified) |
| Omnidirectional | No |
| Party Mode | Yes (Partychain up to 100 speakers) |
| Power Input | Micro USB |
| Stereo | Yes |
| TWS | Yes |
| Weight | 2.2 lbs (1000 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
- Sony SRS-XB30 vs Soundcore Flare 2
- Sony SRS-XB30 vs W-King D8 Mini
- Sony SRS-XB30 vs Marshall Emberton II
- Sony SRS-XB30 vs B&O Beosound Explore
- Sony SRS-XB30 vs Marshall Emberton III
- Sony SRS-XB30 vs Bose SoundLink Color II
- Sony SRS-XB30 vs Tribit Stormbox Mini+
- Sony SRS-XB30 vs Sony SRS-XE200
- See all 89 comparisons