In a sound system for use with portions of a drummer's set-up of cymbals and drums for transducing audio signals from a plurality of discrete sources originating said signals, means for isolating the signals from said sources with respect to each other, transmission channels respectively associated with each of said sources for carrying said signals, respectively settable tone control means for each said channel for modifying the signals thereof, means for providing a plurality of special effects to be applied to the signals from said sources, control means for each said channel for selecting a special effect to be applied to the signals of said channel, and means for directing the signals of the respective channels in common to each of their respective selected special effects, the first named said means comprising transducers carried by impact portions of each of said sources originating said audio signals, and means for damping the vibrations of said impact portions to inhibit objectional mechanical feedback through said impact portions to said transducers.