Sound Absorbing Acoustic Panel

What it is

The ATS acoustic panel, 24 by 48 by 2 inches. A mineral wool core — ROCKWOOL AFB — inside a solid wood internal frame, wrapped in 100 percent jute burlap, with a quarter-inch wood back. About 12 pounds. Independent lab testing of the assembly returns an NRC of 1.00. Beveled edge; the listing here is the Fog colorway. Aluminum Z-clips, screws and anchors are included. Built to order in Illinois.

Why it’s on this list

Hard parallel walls send your own voice back at the microphone a few milliseconds late, and that is what makes home recordings sound like home recordings. No microphone fixes it. Absorbing the first reflections does. Two inches of dense mineral wool on the right four walls will do more for your sound than doubling the price of your microphone.

The other reason is what it is made of. Wedge foam is largely decorative below about a kilohertz; it costs less because it does less. This is mineral wool in a wood frame with real fabric on it, made by a company in Illinois that builds each panel when you order it. Furniture-grade construction at a price close to what the foam sellers ask.

What to know before you buy

• One panel does nothing. Treatment is a quantity problem. A small room wants four to eight: both side-wall first reflection points, the wall behind you, and a cloud over the desk. Budget for the set, not the sample.
• Two inches does not treat bass. The published absorption at 125 Hz is 0.12 — near nothing. Small-room boom lives at and below that, and it needs thickness and corners: four-inch panels or dedicated corner traps.
• The standard panel is not fire rated. ATS sells fire-rated versions. Check code before these go into a commercial space, a school, or a church.
• Twelve pounds each. The Z-clips work, but drywall needs the included anchors and a straight line. Done right, the holes are picture-hook size — which makes this viable in a rental.
• Burlap fades in direct sun. Do not hang these where the afternoon light lands.
• Build your own if you are handy. Mineral wool, fabric, and a frame is a Saturday and roughly half the money. And if the real goal is a decent-sounding video call, a rug, curtains, a full bookshelf and a microphone close to your mouth get you most of the way for nothing.
• Do not overdo it. A room with every surface absorbed is unpleasant to sit in and unpleasant to record in. Kill the reflections. Leave the room alive.