M5Stack M5StickC Speaker Hat includes the integrated PAM8303 3W single-channel type D power amplifier. The Speaker Hat features a high PSRR and differential inputs that eliminate noise and RF interference. The device offers an ultra-low EMI interference, with 20dB better than FCC class B standard at 300MHz. The M5Stack M5StickC Speaker Hat has the characteristics of simple functions and high audio reproduction.