This home stereo amplifier circuit using STK4241V.  This home stereo amp is equiped with STK4241V wich is a thick film hybrid IC, AF Power Amplifier (Split Power Supply) (120W+120W min, THD = 0.08%). 

Some features of STK4241V

• Muting circuit built-in to isolate all types of shock noise.
• Current mirror circuit for low 0.08% total harmonic distortion