The design is very good amp circuit, feeding, protection on one’s plate, mono, stereo, bridge, parallel port can be used with ± 35 Volts DC supply voltage according to the values ​​Output power: stero mode 4 Ω speaker with... Electronics Projects, LM4780 Gainclone Amplifier Circuit Speaker Protection "audio amplifier circuits, ic amplifier, " Date 2019/08/02