Auralex Acoustics BabyGramma v2  Isolation Platform for Amplifers, 1.75 x 15 x 15-Inches Hear the true sound of your amp, loudspeaker or subwoofer Decouples the amp from the floor for incredible purity Instantly improve your sound on-stage or in the studio A tighter, more focused low end Weight Limit: 200lbs.