Short answer: the Teufel Rockster 2. It ranks #4 of 13 large party speakers by sound quality, rated 4.7/5, at $1,269.94. The Sony ULT Tower 9 ranks #9, rated 4.2/5, at $898, $371.94 cheaper, which does not close the gap in sound quality.
Why pick the Teufel Rockster 2: Sounds better and more evenly tuned than the JBL Partybox 720. Watch for: Not quite as deep bass as the JBL Partybox 720.
Why pick the Sony ULT Tower 9: Slightly better sounding than the ULT Tower 10. The catch: Not as deep of bass and loses more bass at high volume even compared to the lower end Partybox speakers.
Buy the Teufel Rockster 2. It is rated higher for sound quality, and the $371.94 you would save on the Sony ULT Tower 9 does not close the gap.
Battery life favors the Sony ULT Tower 9: rated for 25 hours against 15 hours for the Teufel Rockster 2.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Teufel Rockster 2 | Sony ULT Tower 9 | |
|---|---|---|
| Price | $1,269.94 | $898.00 |
| Ranked | #4 of 13 in Large Party Size Portable Bluetooth Speakers | #9 of 13 in Large Party Size Portable Bluetooth Speakers |
| Aux Input | Yes (3.5mm, 6.3mm, RCA) | Yes |
| Battery Life | 15 hours (Manufacturer specified) | 25 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC | SBC, AAC, LDAC |
| Guitar Input | Yes | Yes |
| IP Rating | IPX2 | None |
| Microphone Input | Yes (XLR) | Yes (Karaoke mode with echo effect) |
| Power Bank | Yes | Yes (USB-A, 5V/1.5A) |
| Power Input | AC Power cord, USB-C | AC Power cord |
| Weight | 96.5 lbs (43.79 kg) | 65.3 lbs (29.6 kg) |
| XLR Input | Yes (2x, line level) | - |
| App | Yes (Teufel Go) | Yes |
| Built-in Microphone | No | No |
| EQ | Yes | Yes (10 band) |
| Party Mode | Yes (Party Link, up to 100 speakers) | Yes (Auracast up to 100 speakers) |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | No | Yes |
| Wi-Fi | No | No |
| Bluetooth Version | 5.3 | 5.3 |
| Dimensions | 20.6” x 38.6” x 23.4” (524 x 980 x 595 mm) | 16.1” x 35.8” x 18” (410 x 910 x 456 mm) |
| Drivers | 2-way: 1x 380mm (15”) woofer, 1x 35mm horn-loaded tweeter | 7 drivers: 1x 12.6”x12.6” woofer, 2x 4.7” midrange, 2x 2” tweeter, 2x 1.6” rear tweeter |
| Amplifier Power | 440W | 148W |
| Maximum SPL | 132dB (Manufacturer specified) | - |
| Digital Aux Input | No | No |
| Frequency Response | 36Hz - 20kHz (Manufacturer specified, -6dB) | - |
| Removable Battery | - | No |
| Lights | - | Yes |
| Strap | - | No |
Related Speaker Comparisons
More worthwhile head-to-heads for Teufel Rockster 2:
- Sony ULT Tower Max vs Teufel Rockster 2
- JBL Partybox Ultimate vs Teufel Rockster 2
- JBL Partybox 1000 vs Teufel Rockster 2
- Teufel Rockster 2 vs JBL Partybox 720
- Teufel Rockster 2 vs JBL Partybox 710
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 2: $1,269.94 eBay
Pros: Sounds better and more evenly tuned than the JBL Partybox 720. Horn-loaded tweeter gives far more consistent off-axis sound, unlike the Partybox 720’s dual tweeters, which suffer from comb-filtering interference. Gets louder without distorting: the Partybox 720 starts breaking up at high volume well before this does. Projects clearly over long outdoor distances, covering a large area evenly.
Cons: Not quite as deep bass as the JBL Partybox 720. Bass output drops off further at high volume.
Full Teufel Rockster 2 review and specifications →
| Amplifier Power | 440W |
|---|---|
| App | Yes (Teufel Go) |
| Aux Input | Yes (3.5mm, 6.3mm, RCA) |
| Battery Life | 15 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 20.6” x 38.6” x 23.4” (524 x 980 x 595 mm) |
| Drivers | 2-way: 1x 380mm (15”) woofer, 1x 35mm horn-loaded tweeter |
| EQ | Yes |
| Frequency Response | 36Hz - 20kHz (Manufacturer specified, -6dB) |
| Guitar Input | Yes |
| IP Rating | IPX2 |
| Maximum SPL | 132dB (Manufacturer specified) |
| Microphone Input | Yes (XLR) |
| Omnidirectional | No |
| Party Mode | Yes (Party Link, up to 100 speakers) |
| Power Bank | Yes |
| Power Input | AC Power cord, USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 96.5 lbs (43.79 kg) |
| Wi-Fi | No |
| XLR Input | Yes (2x, line level) |
- Links
- Reviews, Comparisons and Sound Samples
- Joy & Oluv’Sone: Teufel Rockster 2 vs JBL Partybox 720 - in the open field More from Oluv’Sone →
- Joy & Oluv’Sone: Teufel Rockster 2 vs JBL Partybox 720 - indoor listening test
- Joy & Oluv’Sone: Teufel Rockster 2 vs Rockster Air 2 - indoor listening
- Joy & Oluv’Sone: Teufel Rockster 2 vs JBL Partybox 720 - outdoor test
- Oluv Patreon: Teufel Rockster 2 vs JBL Partybox 720 - indoor listening test
- Oluv Patreon: Teufel Rockster 2 vs Rockster Air 2 - indoor listening test
- Oluv Patreon: Teufel Rockster 2 vs JBL Partybox 720 - in the open field
- Oluv Patreon: Teufel Rockster 2 vs JBL Partybox 720 - on the street
- M1MTechChannel: Vorsicht LAUT ⚠️ | Teufel Rockster 2 vs JBL Partybox 720 / Ultimate More from M1MTechChannel →
- M1MTechChannel: Teufel Rockster 2 im XXL Soundcheck: Absolut GEISTESKRANK
- Head-to-Head Comparisons
- Teufel Rockster 2 vs JBL Partybox 720
- Teufel Rockster 2 vs JBL Partybox 1000
- Teufel Rockster 2 vs JBL Partybox Ultimate
- Teufel Rockster 2 vs JBL Partybox 710
- Teufel Rockster 2 vs JBL Partybox 520
- Teufel Rockster 2 vs Sony ULT Tower Max
- Teufel Rockster 2 vs Teufel Rockster
- Teufel Rockster 2 vs Sony ULT Tower 10
- See all 19 comparisons
Sony ULT Tower 9: $898.00 Amazon eBay
Older model: the Sony SRS-XV900 (ranked lower, rated 3.7/5).
Pros: Slightly better sounding than the ULT Tower 10
Cons: Not as deep of bass and loses more bass at high volume even compared to the lower end Partybox speakers. Bass drops off a lot at higher volumes. Not quite as loud as the ULT Tower 10
Full Sony ULT Tower 9 review and specifications →
| Amplifier Power | 148W |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 16.1” x 35.8” x 18” (410 x 910 x 456 mm) |
| Drivers | 7 drivers: 1x 12.6”x12.6” woofer, 2x 4.7” midrange, 2x 2” tweeter, 2x 1.6” rear tweeter |
| EQ | Yes (10 band) |
| Guitar Input | Yes |
| IP Rating | None |
| Lights | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | Yes (Auracast up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/1.5A) |
| Power Input | AC Power cord |
| Removable Battery | No |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 65.3 lbs (29.6 kg) |
| Wi-Fi | No |
- Links
- Reviews, Comparisons and Sound Samples
- Oluv Patreon: Sony ULT Tower 9 vs JBL Partybox 720 - indoor listening test More from Oluv’Sone →
- Oluv Patreon: Sony ULT Tower 9 vs JBL Partybox 720 - power generator test
- GYMCADDY: Sony ULT Tower 9 Vs Sony ULT Tower 10 - Size Doesn’t Matter More from GYMCADDY →
- GYMCADDY: Sony ULT Tower 9 Review - Amazing Instrument Separation
- GYMCADDY: JBL Partybox 720 Vs Sony ULT Tower 9
- Joy & Oluv’Sone 3DAudio & Music: Sony ULT9 vs JBL Partybox 720 - the king of battery powered party speakers
- Head-to-Head Comparisons
- Sony ULT Tower 9 vs Sony ULT Tower 10
- Sony ULT Tower 9 vs Teufel Rockster
- Sony ULT Tower 9 vs JBL Partybox 520
- Sony ULT Tower 9 vs Sony SRS-XV900
- Sony ULT Tower 9 vs JBL Partybox 710
- Sony ULT Tower 9 vs Marshall Bromley 750
- Sony ULT Tower 9 vs JBL Partybox 720
- Sony ULT Tower 9 vs Altec Lansing SoundRover Pro 650
- See all 21 comparisons