Since you don’t plug this in, not sure if you’d technically call it gear or not. I have about a 19’x11’ music/movie room. I like the size, but the Achilles heel has always been a 6.5’ wide open entry into the room. We like the opening so don’t want to wall and door it off, but it goes down a 20’ hallway with 2 rooms off of one side plus a stairway. Anyway, it‘s been a nightmare trying to get the room correction right, plus it’s an awfully big space for the subs to pressurize. So this past week I made a little project that’s basically a portable wall. There’s 4 panels each 2’ x just under 7’, made of mostly 1”x4” with some 1”x3” bracing, and the panels are connected using piano hinges. I used Rockwool safe and sound insulation with a cheap broadcloth for cover, then added 5” furniture mover feet for it to slide on the laminate and to provide stability. I offset the feet (2 per panel) on each panel so they wouldn’t interfere with each other when folded. Waiting on a 10” black hook and eye set to lock the top when folded, at which time I’ll lose the blue strap. The ceiling is low there, but is about a foot higher once you come in the main room. Initial thoughts are this is working better than I thought, with the bonus of it keeping noise out, as well as the sound in. Probably one of better things I’ve done to improve the sound for the money.FYI, the little white fence is to keep 2 terriers out.