Guys, I'm working, but the sound quality is full of hat. The product itself bought purely because of interest, to test. Compared the sound quality with 5 receivers on 7 types of speakers. I will say so, even a super old budget receiver Yamaha pays this Chinese amplifier without straining on the sound quality. The product to buy is not recommended, you will be disappointed with the sound quality, it is better to buy for this money bu normal receiver, you will be satisfied and say then thanks.