Now do keep in mind that we are talking about using a mic that will match or exceed the audio bandwidth of the radio not what is best for use in a studio or recording music or voice overs! $20 mic vs $12,000.00 mic. Yes clearly you can hear a difference in this video but do keep in mind we are talking primarily about CB radio use and secondarily amateur radio use. This is why a cheap $20 or less electret condenser mic and some sort of eq/preamp can sound killer direct injected into a radio. This is why you do not need a $150, $250, $400, $700, $1200 mic for CB or Amateur radio! If going through the actual mic jack/connector through the audio signal path, amc and filtering will reduce the effect of anything you do. If you look at this through the filter of two way radio not recording studio you can really see how incredible that cheap $20 mic sounds for two way radio use only. I suspect that one could take the $20 mic apart and by swaping out cap values and types one could tune it a lot. No way a copper sputtered diaphragm is going to match a gold sputtered diaphragm or other exotic metal. Keep in mind how many radio's today have rather limited audio out of the box between 800-2500 and if you are lucky 250-3000. That would be the -3db down at each end.