Different classes, so treat this as a step-up-or-not question rather than a head-to-head. The Teufel Rockster Cross ranks #23 of 120 large speakers by sound quality at $199.99; the Harman Kardon Luna 2 ranks #25 of 179 medium speakers by sound quality at $199.95.

The Teufel Rockster Cross is the longer-running choice. A splash resistant speaker with fairly neutral, vocal focused sound and punchy, controlled bass that suits rock and jazz. It is rated for 16 hours of battery against 12 for the Harman Kardon Luna 2. It supports aptX Bluetooth, which the Harman Kardon Luna 2 lacks. It keeps a wired aux input, which the Harman Kardon Luna 2 lacks. The tradeoff: Outdoor mode can sound somewhat harsh due to the 4kHz peak.
The Harman Kardon Luna 2 is the lighter, tougher option. A stylish waterproof speaker with clear, spacious mids, tight bass that stays clean at volume, and stereo pairing with a second unit. At 1.6 lbs (735 g) it weighs much less than the Teufel Rockster Cross at 5.3 lbs (2.4 kg). It is rated IP67 against IPX5 for the Teufel Rockster Cross. It has an adjustable EQ, which the Teufel Rockster Cross lacks. Watch for: Treble can sound bright and edgy, and it loses more output off-axis than some rivals.
Buy the Teufel Rockster Cross at $199.99 for a large speaker, or the Harman Kardon Luna 2 at $199.95 for a medium speaker instead.
Want more options? Browse the full Portable Bluetooth rankings.
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Specifications Side By Side
| Teufel Rockster Cross | Harman Kardon Luna 2 | |
|---|---|---|
| Price | $199.99 | $199.95 |
| Ranked | #23 of 120 in Large Size Portable Bluetooth Speakers | #25 of 179 in Medium Size Portable Bluetooth Speakers |
| Aux Input | Yes | No |
| Bass Extension (-10dB) | 51Hz | - |
| Battery Life | 16 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| IP Rating | IPX5 | IP67 |
| Power Input | DC barrel jack | USB-C |
| TWS | Yes | Yes |
| Weight | 5.3 lbs (2.4 kg) | 1.6 lbs (735 g) |
| App | No | Yes |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, aptX | SBC |
| Built-in Microphone | Yes | - |
| EQ | No | Yes (4 presets + custom) |
| Party Mode | No | - |
| Power Bank | Yes (USB-A) | - |
| Stereo | Partially | No |
| Omnidirectional | No | No |
| Bluetooth Version | 5.0 | 5.4 |
| Dimensions | 15” x 6.3” x 5.1” (380 x 160 x 130 mm) | 8.5” x 3.3” x 3.2” (216 x 84 x 81 mm) |
| Drivers | 5” woofer, 2x textile dome tweeters + 2x passive radiators | 62mm x 82mm woofer with passive radiator, 20mm tweeter |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) | 58Hz - 20kHz (-6dB) (Manufacturer specified) |
| Amplifier Power | 30W | 40W (25W woofer + 15W tweeter) |
| Digital Aux Input | No | No |
| Strap | Yes (detachable shoulder strap) | No |
| MicroSD Playback | - | No |
| USB Playback | - | No |
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