Discussion
What happens if a class A stage is overdriven?
Answer: C
Driven beyond its range, the output flattens at both extremes, against saturation on one side and cut-off on the other. A stage biased off-centre clips one side first, but sufficient overdrive reaches both. Nothing is permanent and the distortion is plainly visible. Symmetrical clipping is itself diagnostic: it says the operating point is roughly centred and the drive is simply too large.
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