Amplifier Output Clipping
Yes and no.

I would say that the voltage you see when clipping occurs is the maximum voltage that the amplifier can provide temporarily. Depending on how it is designed, it is possible that it is not sized to provide a steady DC voltage so high (or low), while also providing some current.

It is pretty safe to assume that you will never see anything above (or below) clipping, unless something bad happens to the amp i.e. it breaks down.