Durock Koala
vsKailh Rainy Whisper
Hear them
Side by side
| Durock Koala | Kailh Rainy Whisper | |
| Type | Linear | Linear |
| Sound | Balanced | Recorded |
| Loudness | -46.5 dB | -28.7 dB |
| Pitch | 2,724 Hz | 3,165 Hz |
| Spring weight | 60.3 g | 60.3 g |
| Actuation force | 41.4 g | 34.1 g |
| Bottom-out force | 76.8 g | 70.1 g |
| Total travel | 3.9 mm | 4 mm |
Force curves compared
Both curves modeled from each switch's measured actuation, bottom-out values.
Which should you pick?
The Durock Koala and Kailh Rainy Whisper are both linear switches, but they feel and sound different enough to be worth comparing directly.
Both use a 60.3g spring, so they weigh about the same under the finger.
On sound, Kailh Rainy Whisper is the louder of the two at -28.7dB versus -46.5dB (17.8dB quieter), pitched higher at roughly 3,165Hz. It reads as recorded, while Durock Koala comes across more balanced.
Pick Durock Koala if you want a quieter typing sound. Pick Kailh Rainy Whisper if you'd rather have a louder, more present sound. Use the players above to hear which one you actually prefer.
Full pages
Hear the difference for real
Load either switch into the live simulator and A/B them with your plate, case and keycaps.
Open the simulator →