Kailh Box Night Firefly
vsKTT Purple Sauce
Hear them
Side by side
| Kailh Box Night Firefly | KTT Purple Sauce | |
| Type | Clicky | Clicky |
| Sound | Clicky | Clicky |
| Loudness | -29.8 dB | -28.1 dB |
| Pitch | 3,119 Hz | 2,655 Hz |
| Spring weight | 66.7 g | 66 g |
| Actuation force | 44.8 g | 40.7 g |
| Bottom-out force | 86.2 g | 87.6 g |
| Total travel | 3.9 mm | 4.1 mm |
| Tactile bump | 60 g | 61 g |
Force curves compared
Both curves modeled from each switch's measured actuation, bottom-out and tactile-bump values.
Which should you pick?
The Kailh Box Night Firefly and KTT Purple Sauce are both clicky switches, but they feel and sound different enough to be worth comparing directly.
Kailh Box Night Firefly runs the heavier spring at 66.7g versus 66g — about 0.7000000000000028g more — so it feels more deliberate under the finger, while KTT Purple Sauce is quicker and lighter to press.
On sound, KTT Purple Sauce is the louder of the two at -28.1dB versus -29.8dB (1.6999999999999993dB quieter), pitched lower at roughly 2,655Hz. It reads as clicky, while Kailh Box Night Firefly comes across more clicky.
Both are tactile, but KTT Purple Sauce has the stronger bump at about 61g versus 60g.
Pick Kailh Box Night Firefly if you want a heavier, more controlled press and a quieter typing sound. Pick KTT Purple Sauce if you'd rather have a lighter, faster press and 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 →