Short answer: the Rockster 2 if you need battery power, the Partybox Ultimate 2 for output, streaming and inputs.
The Rockster 2 is the one that runs on battery. Teufel rates it for 15 hours and pairs a single 380mm (15-inch) woofer with a horn-loaded 35mm tweeter, with the horn giving it consistent sound well off axis. It is a genuinely portable event speaker in a way the AC-only Partybox Ultimate 2 is not.
The Partybox Ultimate 2 is the more powerful and better-connected cabinet. JBL rates it at 1500W RMS against the Rockster 2’s 440W, and it adds Wi-Fi with AirPlay 2, Chromecast and Spotify Connect, which the Teufel lacks. It also has more inputs, including mic, guitar, aux, optical and USB-C playback, where the Rockster 2 has no USB playback.
Bass and weather protection split the two. The Rockster 2 reaches a rated 36Hz (-6dB); JBL rates the Partybox Ultimate 2 deeper at 28Hz (-6dB), and the Rockster’s bass output drops off further at high volume. The JBL is IPX4 against the Teufel’s IPX2, so it shrugs off splashes while the Teufel only handles light moisture.
Buy the Partybox Ultimate 2 if you have mains power and want maximum output, Wi-Fi streaming and the widest input set.
Buy the Rockster 2 if you need a battery-powered speaker that still fills a large outdoor space.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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Specifications Side By Side
| JBL Partybox Ultimate 2 | Teufel Rockster 2 | |
|---|---|---|
| Price | $1,799.95 | $1,269.94 |
| Ranked | #2 of 13 in Large Party Size Portable Bluetooth Speakers | #5 of 13 in Large Party Size Portable Bluetooth Speakers |
| Amplifier Power | 1500W RMS | 440W |
| App | JBL One | Yes (Teufel Go) |
| Aux Input | Yes | Yes (3.5mm, 6.3mm, RCA) |
| Battery Life | No Battery | 15 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC |
| Bluetooth Version | 6.0 | 5.3 |
| Built-in Microphone | No | No |
| Digital Aux Input | No | No |
| Dimensions | 18.4” x 41.4” x 19.4” (466.7 x 1052.5 x 493.3 mm) | 20.6” x 38.6” x 23.4” (524 x 980 x 595 mm) |
| Drivers | 2x 264mm subwoofer, 2x 124mm mid-range, 2x 30mm horn-loaded tweeter | 2-way: 1x 380mm (15”) woofer, 1x 35mm horn-loaded tweeter |
| EQ | Yes (Smart EQ Mode) | Yes |
| Frequency Response | 28Hz - 20kHz (-6dB) | 36Hz - 20kHz (Manufacturer specified, -6dB) |
| Guitar Input | Yes | Yes |
| IP Rating | IPX4 | IPX2 |
| Lights | Yes | - |
| Microphone Input | Yes (EasySing AI vocal removal) | Yes (XLR) |
| Omnidirectional | No | No |
| Optical Input | Yes | - |
| Party Mode | Yes (Auracast) | Yes (Party Link, up to 100 speakers) |
| Power Bank | Yes (USB-C PD, up to 20V/1.5A) | Yes |
| Power Input | AC Power cord | AC Power cord, USB-C |
| Stereo | Yes | Yes |
| Strap | No | - |
| Streaming Services | AirPlay 2, Chromecast, Spotify Connect | - |
| TWS | Yes | Yes |
| USB Playback | Yes | No |
| Weight | 105.1 lbs (47.68 kg) | 96.5 lbs (43.79 kg) |
| Wi-Fi | Yes (Wi-Fi 6, 2.4 and 5GHz) | No |
| Wheels | Yes | - |
| XLR Input | Yes (line-in) | Yes (2x, line level) |
| Maximum SPL | - | 132dB (Manufacturer specified) |
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