Thock
ProfileThe deep, low-frequency resonant sound of a well-built gasket-mount keyboard. Round, satisfying, drum-like.
Hear it on: Thocky · TH99 with PBT caps and Creamy Jade
Clack
ProfileThe bright, high-frequency snap from minimal-foam ABS-capped builds with stiff plates. Vintage typewriter character.
Hear it on: Clacky · Galaxy100 QMK with ABS doubleshot
Marble
ProfileThe bouncy, round pop from POM-housed switches in PC-plate builds with light foam. Internal "rolling" character.
Hear it on: Marbly · TH99 PRO with Cream Marble switches
Mahjong
ProfileThe percussive tile-on-hardwood snap from long-pole stems on aluminum plates with no case foam. Asia's signature.
Hear it on: Mahjong · Galaxy65 with long-pole linears
Pop
ProfileShort, snappy, popcorn-like discrete pops from long-pole stems in compact cases. Sharper than marble, rounder than mahjong.
Hear it on: Poppy · compact 65% builds with long-pole linears
Two-Beat
ProfileThe double acoustic event unique to tactile switches: bump engagement up top, bottom-out below. The original mechanical sound.
Hear it on: Tactile · TH80 PRO with Wisteria tactiles
Ping
DefectAn unwanted high-frequency metallic ring, usually from an unlubed spring. Sounds like a tiny bell after each keystroke. Fix with spring lube.
Avoid: Unlubed springs · dry stab wires
Rattle
DefectLoose, irregular noise from a poorly tuned stabilizer or a loose stem-to-housing fit. Cleanup with stab lube and the band-aid mod.
Avoid: Unbalanced stabs · low-tolerance housings
Hollow
DefectCheap, echoey character from an empty case interior with no foam on a non-tuned build. Different from intentional case resonance.
Avoid: Cheap tray-mount cases with no foam
Bottom-out
EventThe moment a keystroke reaches full travel (~4mm). The dominant sonic event in linears; one of two events in tactile builds.
Key in: Most profiles · all linear builds
Top-out
EventThe sound of the switch returning to rest after release. Audible mainly on stiff or clacky builds — often the source of "clack."
Key in: Clacky · Mahjong · Tactile rebound
Resonance
ConceptSustained vibration of the case after the strike. Controlled resonance = deep thock; uncontrolled = hollow ringing.
Tune by: Foam strategy · case material · mount
Long-pole
BuildA stem geometry where bottom-out lands earlier (~3.5mm vs 4mm). Concentrates impact into a tighter transient — basis for poppy and mahjong.
Look for: Wisteria Linear V2 — or check stem pole length in any switch spec sheet
Decay
ConceptHow quickly a keystroke's sound dies after impact. Short decay = articulate; long decay = full / thocky. Tuned via foam and plate.
Adjust with: Foam density · plate flex
Transient
ConceptThe initial sharp attack before the body of the sound develops. Sharp = clacky / mahjong / poppy; soft = creamy / silent.
Sharpen with: Stiff plate · long-pole · no foam