Acoustic Noise Isolation Platform - Foam Riser Recoil Stabilizer with Rubber Base for Studio Monitor, Subwoofer, Loudspeaker
From the Amazon Description . . .
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" These foam isolation pads effectively absorb unwanted low-frequency vibrations in your setup
High Density Foam: Made from high-density engineered foam that is lab-tested to promote efficient speaker stabilization, noise isolation and sound dampening. Control your low-frequency vibrations, buzzes and clicking resulting from imbalance
Anti-Slip Base: Features a special anti-slip rubber base pad which contributes to security and stability. It is also equipped with an integrated top plate made of machined steel for sturdy placement of speakers
44.6 lb Load Capacity - Each riser has a maximum load capacity of 44.6 pounds. Important when considering active / powered subwoofers. Recommended for Recording Studio, Home Theater, Music Listening Room, and more "
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Used on desk in recording/practice studio for one year
NOTE: Pictures are from product description - actual item appears the same