I think the system really succeeded. Bluetooth works very well. Simple operation. Very powerful bass and many adjustment possibilities round off the great look. 500Watt Power has this sound system. Until level 50 you can turn it up. For my 5m² room I need mostly level 25 to 30. That must be enough ° o ^ " Also I like the handles to the 16KG to move heavy plant. SONY stands for quality !!!