Akko CS Sponge
vsKailh Box Brown
Hear them
Side by side
| Akko CS Sponge | Kailh Box Brown | |
| Type | Tactile | Tactile |
| Sound | Balanced | Recorded |
| Loudness | -39 dB | -40.3 dB |
| Pitch | 2,261 Hz | 2,081 Hz |
| Spring weight | 55 g | 55.9 g |
| Actuation force | 32 g | 31.7 g |
| Bottom-out force | 71.2 g | 70.7 g |
| Total travel | 3.9 mm | 4 mm |
| Tactile bump | 43 g | 48 g |
Force curves compared
Both curves modeled from each switch's measured actuation, bottom-out and tactile-bump values.
Which should you pick?
The Akko CS Sponge and Kailh Box Brown are both tactile switches, but they feel and sound different enough to be worth comparing directly.
Kailh Box Brown runs the heavier spring at 55.9g versus 55g — about 0.8999999999999986g more — so it feels more deliberate under the finger, while Akko CS Sponge is quicker and lighter to press.
On sound, Akko CS Sponge is the louder of the two at -39dB versus -40.3dB (1.2999999999999972dB quieter), pitched higher at roughly 2,261Hz. It reads as balanced, while Kailh Box Brown comes across more recorded.
Both are tactile, but Kailh Box Brown has the stronger bump at about 48g versus 43g.
Pick Akko CS Sponge if you want a lighter, faster press and a louder, more present sound. Pick Kailh Box Brown if you'd rather have a heavier, more controlled press and a quieter typing 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 →