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 82 large speakers by sound quality at $199.99; the Harman Kardon Luna 2 ranks #23 of 144 medium speakers by sound quality at $199.95.
The case for the Teufel Rockster Cross: Pretty neutral frequency response. The catch: Outdoor mode can sound somewhat harsh due to the 4kHz peak.
Why pick the Harman Kardon Luna 2: Articulate, spacious midrange with precise imaging and instrument separation. 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.
Specifications Side By Side
| Teufel Rockster Cross | Harman Kardon Luna 2 | |
|---|---|---|
| Price | $199.99 | $199.95 |
| Ranked | #23 of 82 in Large Size Portable Bluetooth Speakers | #23 of 144 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 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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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: $199.99 Amazon eBay
Newer model: the Teufel Rockster Cross 2, rated 4.2/5.
Pros: Pretty neutral frequency response. More vocal/midrange-focused than the JBL Xtreme 4, thanks to a larger mid/bass driver - better suited to rock and jazz. Nicer upper-bass detail than the JBL Xtreme 4. Punchy, well-controlled bass that suits rock music, unlike the Soundcore Boom 2 Plus’s overboosted, uncontrolled bass even at stock tuning. Clear, detailed audio with good vocal presence and solid Bluetooth codec support even a couple years after release. Measured bass extension of 51Hz (-10dB).
Cons: Outdoor mode can sound somewhat harsh due to the 4kHz peak. Not as deep or full-sounding in the bass as the JBL Xtreme 4.
Full Teufel Rockster Cross review and specifications →
| Amplifier Power | 30W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 51Hz |
| Battery Life | 16 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, aptX |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 15” x 6.3” x 5.1” (380 x 160 x 130 mm) |
| Drivers | 5” woofer, 2x textile dome tweeters + 2x passive radiators |
| EQ | No |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX5 |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | DC barrel jack |
| Stereo | Partially |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| Weight | 5.3 lbs (2.4 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Teufel Rockster Cross vs Bogasing S8 Pro Max
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Harman Kardon Luna 2: $199.95 Amazon B&H Photo Video eBay
Older model: the Harman Kardon Luna (rated 4/5).
Pros: Articulate, spacious midrange with precise imaging and instrument separation. Tight, well-controlled bass from the 62mm x 82mm woofer and passive radiator despite the compact body, and it stays cleaner at volume than pricier rivals like the Sonos Play. IP67 rated, and two units pair via AirTouch for true stereo sound.
Cons: Treble can sound bright and edgy, and it loses more output off-axis than some rivals. Some listeners hear mid-range rattling on certain tracks, similar to sibling JBL models. 12-hour battery life trails category leaders like the JBL Charge 6, which doubles it. Single unit is not stereo (1.1 driver layout).
Full Harman Kardon Luna 2 review and specifications →
| Amplifier Power | 40W (25W woofer + 15W tweeter) |
|---|---|
| App | Yes |
| Aux Input | No |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.4 |
| Digital Aux Input | No |
| Dimensions | 8.5” x 3.3” x 3.2” (216 x 84 x 81 mm) |
| Drivers | 62mm x 82mm woofer with passive radiator, 20mm tweeter |
| EQ | Yes (4 presets + custom) |
| Frequency Response | 58Hz - 20kHz (-6dB) (Manufacturer specified) |
| IP Rating | IP67 |
| MicroSD Playback | No |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | No |
| TWS | Yes |
| USB Playback | No |
| Weight | 1.6 lbs (735 g) |
- Links
- Reviews, Comparisons and Sound Samples
- What Hi-Fi?: Harman Kardon Luna 2 review
- Joy & Oluv’Sone: Sonos Play & Harman Kardon Luna 2 - listening test More from Oluv’Sone →
- Mateusz Cholewa: Harman Kardon Luna 2 UNBOXING vs HK Luna Short Test More from Mateusz Cholewa →
- Storytripper HD: Harman Kardon Luna vs Luna 2 More from storytripperhd →
- Head-to-Head Comparisons
- Harman Kardon Luna 2 vs Harman Kardon Luna
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