Short answer: the Teufel Rockster Cross 2. It ranks #22 of 82 large speakers by sound quality (rated 4.2/5); the Sony ULT Field 5 ranks #44 (rated 3.5/5).
Sound: The Rockster Cross 2 sounds almost identical to the original Cross with default settings, since it uses the same drivers and amplifier, which is fairly neutral and vocal focused with punchy, controlled bass. The ULT Field 5 prioritizes bass and loudness, with subdued upper mids and highs and limited stereo separation.
Battery is close: 38 hours claimed for the Cross 2, or 46 in Eco Mode, against 25 for the ULT Field 5.
The ULT Field 5 is tougher and more featured, with IP67 against IPX5, LDAC, a 10-band app EQ and Party Connect for up to 100 speakers. The Cross 2 has AAC, multipoint and a USB-C sound card.
Both have an aux input, a power bank and stereo pairing. The Cross 2 is lighter, at 2.4 kg against 3.3 kg.
Buy the Teufel Rockster Cross 2. It is rated higher for sound quality than the Sony ULT Field 5.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Teufel Rockster Cross 2 | Sony ULT Field 5 | |
|---|---|---|
| Price | €249.99 | $198 |
| Ranked | #22 of 82 in Large Size Portable Bluetooth Speakers | #44 of 82 in Large Size Portable Bluetooth Speakers |
| App | Yes (Teufel Go) | Yes |
| Aux Input | Yes | Yes |
| Battery Life | 38 hours (Manufacturer specified) | 25 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC | SBC, AAC, LDAC |
| Bluetooth Version | 5.3 | 5.3 |
| Dimensions | 15.4” x 5.9” x 5.1” (390 x 150 x 130 mm) | 12.6” x 5.7” x 4.9” (320 x 144 x 125 mm) |
| Digital Aux Input | Yes (USB-C) | No |
| Drivers | 120mm woofer, 2x 20mm textile dome tweeters + 2x passive radiators | 2x 46mm tweeters + 1x 79mm x 107mm woofer |
| EQ | Yes (bass and treble, presets) | Yes (App + ULT button) |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) | - |
| IP Rating | IPX5 | IP67 |
| Maximum SPL | 101dB (measured by M1M Tech Channel) | - |
| Amplifier Power | 40W RMS | 27W |
| Omnidirectional | No | No |
| Party Mode | Yes (Party Link, up to 100 speakers) | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C) | Yes (USB-C) |
| Power Input | USB-C | USB-C |
| Stereo | Partially | Yes |
| TWS | Yes (Party Link Stereo) | Yes |
| Weight | 5.3 lbs (2.4 kg) | 7.3 lbs (3.3 kg) |
| Strap | Yes (adjustable strap) | Yes (detachable shoulder strap) |
| Built-in Microphone | - | Yes |
Related Speaker Comparisons
More top alternatives to Teufel Rockster Cross 2:
- JBL Xtreme 5 vs Teufel Rockster Cross 2
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- Soundcore Boom 2 vs Teufel Rockster Cross 2
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- 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
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Teufel Rockster Cross 2 vs Teufel Rockster Cross
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- Teufel Rockster Cross 2 vs Bose SoundLink Max
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Sony ULT Field 5: $198 Amazon eBay
Older models: the Sony SRS-XB43 (rated 3.5/5) and the Sony SRS-XG300 (rated 3.1/5).
Pros: A tough 3.3kg portable with IP67 protection, LDAC/AAC support, aux input, a 10-band app EQ, Party Connect, USB-C power-bank output and a claimed 25-hour battery. Reviews find it energetic and dynamic with substantial bass, enough volume for a yard, and two ULT modes that let bass-focused listeners choose a deeper or punchier presentation.
Cons: It prioritizes bass and loudness over fidelity: reviews find the upper mids and highs subdued, with limited stereo separation and soundstage depth. Deep bass is less authoritative than the enclosure suggests, and the loud confirmation tone when pressing the ULT button is an unnecessary annoyance. Use the app EQ and audition it before buying for detail-focused music.
Full Sony ULT Field 5 review and specifications →
| Amplifier Power | 27W |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 12.6” x 5.7” x 4.9” (320 x 144 x 125 mm) |
| Drivers | 2x 46mm tweeters + 1x 79mm x 107mm woofer |
| EQ | Yes (App + ULT button) |
| IP Rating | IP67 |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| Weight | 7.3 lbs (3.3 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Danny Pops: Don’t TOUCH that ULT Button! Sony ULT Field 5 Review More from DannyPops →
- Mark Ellis Reviews: Sony just changed summer sound 🤨 | Sony ULT Field 5 & 3 Review
- Dominik Reviews: Sony ULT Field 5 vs JBL Xtreme 4 - Outdoor Sound Test - Sony shines or not? More from Dominik Reviews →
- Joy & Oluv’Sone: Sony ULT Field 5 vs Anker SoundCore Boom 2 - listening test More from Oluv’Sone →
- Mateusz Cholewa: SONY ULT Field 5 vs BOGASING S8 PRO MAX More from Mateusz Cholewa →
- Head-to-Head Comparisons