vs
8.8Battery9.8
Dimensions
Size comparison
ULT TOWER 9 SRS-ULT900Rockster Air 2 Stereo-Set
| ULT TOWER 9 SRS-ULT900 | Rockster Air 2 Stereo-Set | Difference | |
|---|---|---|---|
| Height | 910 mm | 589 mm | +321 mm |
| Width | 410 mm | 323 mm | +87 mm |
| Depth | 456 mm | 344 mm | +112 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is ULT TOWER 9 SRS-ULT900 better than Rockster Air 2 Stereo-Set?
- Bluetooth version5.3 vs 5+6%
Why is Rockster Air 2 Stereo-Set better than ULT TOWER 9 SRS-ULT900?
- Battery life25 h vs 58 h2.3×
Specifications
Side by side
| Sound | ||
| Speaker channels | Stereo | — |
| Lowest frequency | — | 47 Hz |
| Highest frequency | — | 22,000 Hz |
| Stereo | Yes | — |
| Battery & charging | ||
| Battery life | 25 h | 58 h |
| Battery capacity | — | 7,800 mAh |
| Power bank function | Yes | — |
| Mains powered | Yes | Yes |
| Battery powered (portable) | Yes | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | 5 |
| Bluetooth codecs | — | aptX HD, aptX, AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | — | Yes |
| aptX | — | Yes |
| LDAC | — | No |
| USB audio | Yes | — |
| 3.5 mm jack / AUX | Yes | — |
| Optical input | Yes | — |
| Design & build | ||
| Weight | — | 14,150 g |
| Width | 410 mm | 323 mm |
| Height | 910 mm | 589 mm |
| Depth | 456 mm | 344 mm |
| Colours | — | Black |
| Features | ||
| Party / stereo pairing | Yes | — |
| Light effects | Yes | — |
