I have purchase this products to drive 4x Canton Quinto 540 HiFi speakers. They go in serial order to make 8ohm of load (4ohm x 2). The sound is great, would definitely recommend to anyone requiring a powerful amp for a HiFi system. However, the power is a bit missing. My speakers all together make 200W @8ohm. The amp is supposed to be much more powerful. However, it clips at around 95% of the speaker capability. Enough, but not as advertised. Probably there is some issues with the speaker impedance being more than 4ohm and thus making it more like 8-16ohm speaker set. However, I still expect more power from this amp. Otherwise, the sound quality is top and definitely recommendable to anyone for HiFi use.