Auralex Acoustics GreatGramma Gig & Recording Amplifier & Monitor Modulation Attenuator. The GreatGRAMMA Sound Isolation Riser is an effective device that's used to float an amp or loudspeaker and yields nearly total acoustic sound isolation, resulting in a purity of tone that has to be heard to be believed! GreatGRAMMA comes complete with a carrying handle, road-ready carpet, Studiofoam Wedges (underneath) and PlatFoam (underneath). Now 4x12s, 15" or 18" speaker cabinets will benefit from the awesome Great GRAMMA. Measurements: 76 x 48cm x 7cm Max. Load: 136 kg
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