No, the amplifier has to be able to supply high voltage at high frequencies, not high power. The impedance of the coils rises with frequency, requiring more voltage to be able to drive enough current into the coils. A constant current drive high power amplifier is a tricky beast, it's much easier to use a conventional amp capable of high voltage swings. It's the same problem when driving tape record heads, but at lower powers of course. There, it's usually practical to have constant current drive.