I did some more research, and, apparently, it is. I made the false assumption that this older fiberglass head design was used exclusively with "analog" control circuitry without doing much in the way of making note of the variance in sound.
You know what about this. This is just like between like with the same voice with pop microphone sound and the sound of DTMF just like Franklin County Ohio. Like with the same with the voice and DTMF sound Columbus Ohio Franklin County Ohio to Turkey Point Princeton Florida.
