Do Keycaps Affect Keyboard Sound? PBT vs ABS and Profiles
Updated
Yes, keycaps have a big effect on keyboard sound. They're the part your finger strikes, so their material, thickness and shape change the pitch of every keystroke. Thicker, denser keycaps generally sound deeper; thin keycaps sound higher and clackier. Swapping keycaps is one of the easiest ways to change how a keyboard sounds.
Material: PBT vs ABS
The two most common keycap plastics sound different:
- PBT is denser and more textured. It usually sounds deeper and duller, and resists the shiny wear ABS develops.
- ABS is lighter and smoother. It usually sounds higher-pitched and brighter.
Thickness matters as much as material, though. A thick ABS set can sound deeper than a thin PBT one, so don't judge on material alone.
Thickness
Thicker walls vibrate less and push the sound lower. Thin keycaps, common on budget prebuilt keyboards, are a big reason those boards sound hollow and high. Moving to a thick set is often the most noticeable single upgrade you can make.
Profile
Profile is the shape and height of each keycap:
- Tall, sculpted profiles (such as SA) have more space inside and tend to sound fuller and deeper.
- Medium profiles (such as Cherry and OEM) are the most common and sit in the middle.
- Low, flat profiles (such as XDA and DSA) have less space inside and tend to sound a bit higher and tighter.
Manufacturing: doubleshot vs dye-sub
How the legends are made (doubleshot molding, dye-sublimation, pad printing, laser etching) has much less effect on sound than material, thickness and profile. Choose based on looks and durability.
Which keycaps sound the thockiest?
Thick PBT in a medium or tall profile is the usual starting point for a thocky keyboard. Here's what the community data says about keycaps on builds voted thocky:
Do keycaps fit any keyboard?
Most mechanical keyboards use MX-style cross stems, so most keycap sets will physically fit. The catch is layout: the bottom row and a few other keys vary in size between boards, so check the set includes the sizes yours needs.
Frequently asked questions
Do PBT keycaps sound better than ABS?
PBT keycaps usually sound deeper and duller, and ABS sounds higher and brighter. Thickness matters as much as material, so a thick ABS set can sound deeper than a thin PBT one.
Can keycaps make a keyboard quieter?
Somewhat. Thicker keycaps and lower profiles can soften the sound, but switches, stabilizers and dampening usually make a bigger difference to volume.
Do keycaps fit any keyboard?
Most mechanical keyboards use MX-style stems, so most keycap sets fit, but check the layout: bottom-row sizes and some keys differ between boards.
Which keycaps sound the thockiest?
Thick PBT keycaps in taller sculpted profiles are the usual choice for a thocky sound. The table in this article shows how each keycap material scores with the community.