The Auralex Gramma Amp Isolation Riser has 2 - 2" x 4" x 23" isolating feet that attach to a 15" x 23" carpet-covered platform to float speaker cabs and maximize output while minimizing transmission of sonic energy to the floor. The underside is lined with purple Auralex Studiofoam to prevent cavity resonances. The riser's low 3" profile and discrete gray finish blend with any rig. One Auralex Gramma will support most guitar amps, stage monitors, and small bass rigs up to 300 lbs. Combine 2 Grammas to isolate large subwoofers and bass rigs.
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