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Using an LM358 as line level buffer

Recently, I’ve acquired an old SNES, specifically the SNSM-CPU-1CHIP-03 model, with no audio output. I traced the issue to a dead S-Mix chip, essentially a buffer between the audio DAC and the line output. While the DAC in question, an LM6379A, is technically capable of driving the line output on its own, I thought I’d […]