This is a Yamaha NS-AP6500 6-speaker surround sound system in silver. The system includes the YST-SW010 subwoofer and SLS speakers. It is a wired system with rectangular-shaped speakers and was manufactured in China. You will need to supply all wiring for this unit which isn’t difficult. We have tested this with our own wiring and each speaker appears to be in working condition. This does power on and this does send to other speakers. For your quality of preference you may consider either tuning it to your needs or taking this for maintenance if this is not up to your sound standard. THIS IS tested, this is in working, functional condition and this unit is overall very clean and in good condition.