Tame echo, flutter, and harsh reverb in any room — in about 20 minutes. Peel the backing, press the tile, done. No drilling, no contractor, no mess.
Why KK1134 beats generic wedge foam
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Density 0.83 — heavier, more absorbent than the 0.5 "craft foam" most sellers ship
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8 colors · 2 sizes — most competitors offer 1–2 colors and a single size
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Optional pre-applied self-adhesive — no separate tape, glue, or spray
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Fire-retardant — self-extinguishes on contact; safe for studios, offices, theaters
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168 verified reviews · 300,000+ customers — not a drop-ship listing pretending to be a brand
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Lab-published acoustic data — NRC ~0.70, STC 27 (most foam sellers won't publish numbers because they don't have them)
How it works
Echo and reverb happen when sound bounces off hard, flat surfaces — drywall, glass, hardwood — and arrives at your ears (or your microphone) milliseconds late. The result: muddy recordings, harsh video calls, rooms that feel "live" and tiring.
Wedge acoustic foam absorbs the mid- and high-frequency energy that causes most perceived echo. The pyramid profile increases the surface area sound hits, so more energy gets trapped inside the foam instead of bouncing back into the room. The denser the foam and the deeper the wedge, the more reverb is killed.
Acoustic performance — the numbers
~0.70NRC
(speech-band absorption)
27STC
(overall transmission class)
5 cmWedge thickness
(2 in)
| Center frequency |
Transmission loss |
Absorption coefficient |
| 125 Hz |
17 dB |
0.11 |
| 250 Hz |
17 dB |
0.24 |
| 500 Hz |
27 dB |
0.54 |
| 1000 Hz |
39 dB |
1.06 |
| 2000 Hz |
33 dB |
1.02 |
| 4000 Hz |
26 dB |
1.10 |
NRC ≈ 0.70 means ~70% of speech-band sound energy is absorbed on contact. STC 27 measures broadband transmission loss when applied to a flat reflective surface. Values measured at 5 cm / 2 in wedge thickness. These panels are absorbers — they reduce echo inside a room. They do not soundproof a wall against your neighbor (for that you need mass: extra drywall, mass-loaded vinyl, sealed doors).
Install in 4 steps
1
Wipe the wall
Clean drywall with a dry cloth. Adhesive bonds best to dust-free surfaces.
2
Plan the layout
Lay tiles on the floor first. Photograph the pattern before you start sticking.
3
Stick or glue
YES-adhesive: peel & press firmly 30 sec. No-adhesive: use Arrowzoom double-sided tape or PU construction adhesive.
4
Cut to fit
Trim edge tiles with kitchen scissors or a utility knife. Foam cuts smoothly without crumbling.
Specifications
| SKU |
KK1134 |
| Small tile size |
10 × 10 × 2 in (25 × 25 × 5 cm)
|
| Large tile size |
19.6 × 19.6 × 2 in (50 × 50 × 5 cm)
|
| Weight — small tile |
~1.4 oz (~40 g)
|
| Weight — large tile |
~5.6 oz (~160 g)
|
| Coverage — 12 × small |
8 sq ft (0.75 m²)
|
| Coverage — 24 × small |
16 sq ft (1.5 m²)
|
| Coverage — 12 × large |
32 sq ft (3 m²)
|
| Coverage — 24 × large |
65 sq ft (6 m²)
|
| Material |
High-density polyurethane acoustic foam |
| Density |
0.83 (premium grade) |
| Profile |
Wedge (pyramid) |
| Backing |
Choose: No adhesive · YES self-adhesive (peel & stick) |
| Colors |
Black · Pearl White · Blue · Red · Burgundy · Yellow · Gray · Charcoal (8 total) |
| Fire rating |
Fire-retardant — self-extinguishing on contact |
| NRC |
~0.70 |
| STC |
27 |
Made for
Home recording studioVocal booths, drum rooms, mix-room early reflections.
Podcast / voice-over boothStudio-clean vocals without renting a studio.
Home office & Zoom roomCrisper calls, no harsh echo bouncing off bare walls.
Gaming room / streamingTighter mic pickup, less keyboard slap on stream.
Home theaterCleaner dialogue, less reverb on action scenes.
Practice roomDrum room, guitar amp room, piano studio.
100-Day Quiet-Room Guarantee
Install the tiles. Live with them up to 100 days. If your room isn't noticeably quieter, send them back for a full refund. We've shipped to 300,000+ customers — we know it works, and we'll stand behind every order.
Frequently asked questions
Will this block noise from my neighbor or the street?
No. These are absorption tiles — they reduce echo and reverb inside a room. To block noise coming through a wall, you need mass (extra drywall, mass-loaded vinyl, a sealed door). Be skeptical of any foam product that claims true soundproofing.
How many tiles do I need for my room?
Cover ~25–35% of the largest reflective walls for noticeable echo reduction. Quick guide: small vocal booth or home office → 12 × small (8 sq ft / 0.75 m²). Mid-size podcast room → 24 × small or 12 × large (16–32 sq ft / 1.5–3 m²). Home theater or drum room → 24 × large (65 sq ft / 6 m²).
What's the difference between the 25 cm and 50 cm tiles?
Both are 5 cm / 2 in deep with the same wedge profile and acoustic performance. The 50 × 50 cm (19.6 × 19.6 in) tiles install 4× faster — fewer pieces, fewer seams. The 25 × 25 cm (10 × 10 in) tiles let you mix colors in tighter patterns and fit awkward corners more cleanly.
Will the adhesive damage my paint?
On well-cured, fully painted drywall, the YES-adhesive variant typically removes cleanly. On freshly painted walls (under 30 days), wallpaper, or textured surfaces, paint can lift on removal. Test on a hidden corner first, or choose the No-adhesive variant and use Arrowzoom double-sided tape (removable) instead.
Can I cut the tiles to fit?
Yes. Use sharp kitchen scissors for clean edges, or a utility knife with a metal ruler for straight cuts. High-density polyurethane foam cuts smoothly without crumbling or shedding.
Are these fire-safe?
Yes. KK1134 foam is fire-retardant — it self-extinguishes on contact rather than spreading flame. Safe for residential studios, home offices, and theaters. For commercial venues with specific code requirements, request the supplier certification before installing.
Will the wedge foam crumble or shed over time?
The density-0.83 polyurethane core holds its shape for years under normal indoor conditions. Avoid prolonged direct sunlight (UV degrades any foam) and humidity above 70%. Color may slightly fade in direct sun — see Notes below the FAQ.
Can I mix colors?
Yes — many customers buy two color packs and design a two-tone wall. Lay tiles on the floor first, photograph the pattern, then start sticking. The 8-color palette is exactly why most buyers come to KK1134 instead of the generic black-only foam on Amazon.
Will this work on brick, concrete, or textured walls?
The YES-adhesive variant bonds best on smooth painted drywall. For brick, concrete, popcorn ceilings, or heavy texture, choose the No-adhesive variant and use PU construction adhesive or spray adhesive (3M 90 / Polymat 777).
How long does shipping take?
Handling 1–2 business days. Standard shipping 7–14 days to the US and most countries — free worldwide on orders $99+. Express shipping 7 days or less, available at checkout.
What's your return policy?
100-day quiet-room guarantee. If your room isn't noticeably quieter, contact support within 100 days for a full refund. (Bulk B2B / contractor orders may follow a separate policy — contact us before placing 100+ tile orders.)
Notes: The color stability of Pearl White is affected by UV light, oxidation, and room temperature. Discoloration ("turn yellow") may occur. Before making a purchase, please make sure you are agreeing to this. We will not issue refunds after purchase that claim the color has been changed. Actual color may slightly differ from on-monitor settings.