The 2" Studiofoam Wedge-22 acoustic panel from Auralex is an overall absorber, suitable for just about any mid- to high-frequency application. The panel should be used primarily to treat small to medium-sized areas, including vocal booths, control rooms and sound studios.

It effectively kills standing waves and flutter echoes. And when used in conjunction with LENRD, or Venus Bass Traps, or the Sunburst Broadband Absorbers, will tame the full frequency bandwidth in virtually any room.