Please do not ask if the re20, m201, or m88 can be fixed. These do not have the diaghrams in tact. All other parts are however present including a fresh reform kit inside the re20. If you could somehow source a brand new diphragm then they might be recoverable. Instead these would make great film and television props, or would be great for a mic museum. Or to be parted out to repair other microphones. The ev handheld mic works but needs a an intermittent solder joint fixed. The Shure needs a correct cable adapter and then it might work.