The ribbon elements in some vintage ribbon microphones can be harmed or even destroyed by the presence of phantom power. For this reason, it is commonly recommended that phantom power be turned off when using ribbon microphones. Leaving phantom power on can result in a stretched or completely blown ribbon. In some cases, the microphone may still operate, but at a greatly diminished capacity. Royer ribbon microphones are not usually affected by the presence of phantom power. However, we still recommend that you deactivate phantom power when Royer microphones are being connected or disconnected simply because other abnormal conditions may exist that could cause problems. Turning the phantom power on or off after the mic is connected should pose no problem whatsoever. Note: Our phantom powered models are not included in this discussion. They require phantom power to operate and obviously will not be damaged by phantom power. Here are a few conditions that should be avoided, as they can damage any ribbon microphone regardless of brand or type: