A short time ago, I posted a question about the necessity of recording electric guitar at high SPL (something I had read many times). The responses were in agreement, and several reasons were given as to why a miced guitar amp records better at loud volumes, including the stress of maxed out speakers and tubes. The explanations were comprehensible, however, another question recently popped into view. How much of the equation is governed by the microphone? Theoretically (and remember, it is just conjecture for the sake of discussion), the microphone under greater stress might be accounting for the benefit of recording at high SPL's, rather than the gear itself. Further, how could one separate cause and effect when trying to determine where the benefit is really coming from?