Panels looks amazing my leaving room come alive, my movies n music too, i heard big different now all details with more clarity even the bass, no echo, also for everyone asking noise blocking is not block the sound, absorbed sound yes it does, let me put this way, i play movies with 40 db volumen in my leaving-room same volumen i heard in my bedroom before, now i heard 25db so reduce the loudness but not block Helps a little, n order to see the diferentes u have to buy many panels i got 7 panels n total the web side u found a tool how many panels u need when u enter ur measurements from ur place also i have some damages panel cause delivered guy not care so i ctc acoustimacs n two days i got my replacement, very professional n care about customers thats a BIG PlUs , Thank u Eric