These panels are made in the USA and pas the CA Technical Bulletin CAL 117-2013: requirements. True North's acoustic foam panels will allow you to create a professional grade studio at home.

If you’re unfamiliar, acoustic panels are pieces of foam or fabric that attach to your walls and ceiling to absorb sound, effectively eliminating echo and preventing sound from escaping.

[Eric Wolfram] wrote in to let us know about a simple and cheap acoustic panel ... is preferred. The panels are relatively simple to produce on a budget, just a sheet of 2″ thick dense ...

Because even your room's acoustic treatment should be aesthetically ... which really are just RGB LED light strips, and some fancy foam panels to reduce echo and improve room acoustics.