1.Work: D class 2.Quiescent current:20mA 3.Operating voltage:Dc7.5V-15V 4.Rated output power:10w+10w(8~) 5.Frequency response:20HZ to 50kHZ 6.Recommended supply voltage:12V 7.Subjective sound experience: PAM 8610(10w)power to the PAM8406(6w)bigger more powerful speker can drive.found this amplifier board con drive to 25w speakers