Acoustic Foam XL Bass Trap Studio Soundproofing Corner Wall 12" X 12" X 12" (8 PACK) Great for spot treating sound on walls in your studio or office - For use in recording studios, control rooms, Offices home studios, home entertainment theaters, Home Offices. Make Higher Quality Audio and Video Recording - Improving your audio quality instantly by reducing background noise and echo while recording your voice overs, music, interviews, podcasts, or YouTube videos. Use to spot treat a professional or home recording studio, commercial or home office, rehearsal space, or home theatre. Easy to shape and cut to size, altering wont affect performance.