According to the standard scheme for LM1875 beautiful design pcb design will certainly give better quality sound extremely simple understandable way :) Frequency Response: 14 Hz to 100kHz Harmonic Distortion: “0.04% SNR: 105 dB Rated output power: 20 W... Electronics Projects, 20W Hi Fi Amplifier Circuit with LM1875 "audio amplifier circuits, ic amplifier, simple circuit projects, " Date 2019/08/01