The TDA2030 be the integrated circuit amplifies that highly popular the one number. From this circuit be power amplifier OTL. The electric power about 15W when use 8ohm loudspeakers. But must use power supply the size is appropriate with in this case should use 24V 1A. I have model PCB for the convenience of friends with. Request have funTDA2030 Amplifier OTL 15W , please sir.