vs
8.8Battery5.5
Dimensions
Size comparison
ULT TOWER 9 SRS-ULT900Rockster 2
| ULT TOWER 9 SRS-ULT900 | Rockster 2 | Difference | |
|---|---|---|---|
| Height | 910 mm | 980 mm | −70 mm |
| Width | 410 mm | 524 mm | −114 mm |
| Depth | 456 mm | 595 mm | −139 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is ULT TOWER 9 SRS-ULT900 better than Rockster 2?
- Battery life25 h vs 15 h+67%
Why is Rockster 2 better than ULT TOWER 9 SRS-ULT900?
Rockster 2 has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Output power | — | 440 W |
| Speaker channels | Stereo | — |
| Subwoofer | — | Built-in |
| Lowest frequency | — | 36 Hz |
| Highest frequency | — | 20,000 Hz |
| Adjustable equaliser | — | Yes |
| Stereo | Yes | Yes |
| Battery & charging | ||
| Battery life | 25 h | 15 h |
| Power bank function | Yes | Yes |
| Mains powered | Yes | No |
| Battery powered (portable) | Yes | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | 5.3 |
| Bluetooth codecs | — | AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | — | No |
| aptX | — | No |
| LDAC | — | No |
| Multipoint (two devices) | — | Yes |
| USB-C | — | Yes |
| USB audio | Yes | — |
| 3.5 mm jack / AUX | Yes | — |
| Optical input | Yes | — |
| Smart & streaming | ||
| Companion app | — | Yes |
| Design & build | ||
| Weight | — | 43,790 g |
| Width | 410 mm | 524 mm |
| Height | 910 mm | 980 mm |
| Depth | 456 mm | 595 mm |
| Protection rating | — | IPX2 |
| Water resistance (IPx) | — | IPx2 |
| Features | ||
| Party / stereo pairing | Yes | Yes |
| Light effects | Yes | — |
