Anyone used or experienced those rev33 IEM units?
I get the impression they are some kind of HPF+LPF filtering out the audio that is outside of the hearing range but still affects your ear tolerance.
Im told they work on the mechanics and impedance of the ear as well as the driver in the IEM.
All the reviews seem to rave about them but i'd be interested to know your thoughts if you use predominantly guitar in your IEM mix and if you're hard-wired or wireless