The evolution e 908 instrument microphone is available in four variants: as e 908 D for drums and percussion as e 908 B for wind instruments, congas, and drums with free-floating suspension system as e 908 B ew for the wireless miking of saxophones using an evolution wireless instrument transmitter as e 908 T ew for the wireless miking of trumpets using an evolution wireless instrument transmitter For further information about these models please refer to "Variants".