I have a couple of the 1st CDL56 mics , the look a like for the RK56 mics and they seem to work just fine. they have just a little more audio than the RK56 mics I have. I have never tried one of the workman RK56 look a like mics as of yet since I have so many of the old RK56 mics. all I have ever had to do to the old ones is put a new switch in them if it went bad. I have about a dozen of the new switches to replace them if I can not clean the old ones up.
I use to change a lot of the switches out for truck drivers since they used the mic a lot back years ago and it swinging around in the cab it would get damaged. truck drivers would get rather rough with the mics for some reason.
I use to change a lot of the switches out for truck drivers since they used the mic a lot back years ago and it swinging around in the cab it would get damaged. truck drivers would get rather rough with the mics for some reason.