Back during the debate over "Rush's voice sounds deeper," I listened in, as an old broadcaster, and had two observations.
1. The audio chain (all the gear from the microphone on down the line) sounded less clean than usual. The technical quality of Rush's feed has always been quite good. It didn't sound so good the day I checked. And
2. I think he's a little too proud of his Wm. F. Buckley impersonation and unconsciously slips into some of its pronunciation from time to time. It definitely WAS annoying.
Michael