Accessories Bass Guitars, Amps, and Effects Computer Music DJ Drums Guitars, Amps, and Effects Keyboards and MIDI Live Sound/PA Other Musical Instruments and Equipment Recording Aearo AOSafety E-A-R Professional Musician Ear Plugs Musicians put guitars in cases, and processors in racks, but often they do not protect their most valuable piece of equipment -- their ears. Get maximum protection against noise and volume levels without changing the tone and balance of the music. Highs and lows are still there, they're just a lot quieter.