This is a 100 watt amp around. I use it to power a pair of Yamaha NS-10M Studio. The sound is correct, the precision of the sound is correct, the neutrality is correct, the dynamic is difficult to say (especially with NS-10!) But the reliability is by no cons terrible. Only fake contacts! I bought it used and I guess it's because the seller has sold it: shame! Apart from a, it has a great look. Moreover, it is an amp that barely heats, despite the hours and heurres use. But makes me look good with these fake contacts ... Rsultat: I'll sell it and I do not know what I'm going for now, instead.