SMSL SA50 50Wx2 TDA7492 Class D  Amplifier + Power Adapter (Golden) SMSL SA-50 has real 2 * 50W Stereo circuit design Strong output short circuit protection and thermal overload protection Parallel 6600 UF fever philips filter capacitance, meet the needs of the high power peaks Size : 150mm*92mm*43mm Black fuselage w/ golden panel.