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I *really* want to see the flow of audio in macOS, and the changes in gain/amplitude along the way.If I use the test osc plugin in Logic Pro X, running thru a specific CoreAudio driver, I can succesfully manage keeping a consistent gain structure all the way thru my mixer, using Apple supplied Class-Compliant driver. 0db sine wave is exactly that all the way thru. Easy enough. If I go over that, I hear distortion.Now... safe to say that's calibrated, but... if I use the Music app, or audio coming from Safari, signal is about 4.5db hotter. That simply *cannot* be right. Send that to internal speakers and of course they're cracking and popping.