The satellites are small and the sub has a 16cm woofer (Downfire). It sounds like in a large room initially sobering. => Do not expect too much! I was already a bit disappointed and that's why I connected with immediately Center (Canton GLE 455). Now I am using the system already rather satisfied. There are obvious (~ audibly) the centers that are missing the small Onkyo standard. The sound is now much better and you get thanks to the numerous "listening mode" towards even a halfway acceptable surround sound. Dolby Surround or similar But is definitely not!
Conclusion: for a smaller space (20 square meters), the system is well suited and the value for money is more than okay. Miracles should not be expected. The connectivity options are 1a and outperform much more expensive systems significantly. I also recommend an additional center to round out the sound.
=> Buy recommendation