In Felarya, there are two types of Humans: Those who uses high technology and those who uses magic. But I've never seen a human that used both at the same time, the Isolon Eye in Negav City renders the mechnical defenses almost useless. In such a crazy world, it might not be impossible to have mechanical devices with magical properties. I'm not thinking of the Magictech in Final Fantasy VI, there was hardly anything magical with it. Mostly, those devices would mostly run on the ambient magic of Felarya, but when it enter a zone that nullify magic, it would run on a power source common to mechs or it can run on its own. It could provide interesting results, but this magic technology would be quite rare.
An exemple of magic device, I posted about a communicator that uses not only radio waves and work like a normal communicator, but also allows you to speak with close friends or anyone you are on the same "wavelenght" as well as hear them from virtually anywhere, even if they are on the other side of the planet or at the bottom of the sea. It would become useless if you enter a field neutralizing magic or any EMP.