Changelog
- Updated Oct 03, 2025: Our 1.0.1 Test Bench Update adds clearer terminology and new measurements to our Keystrokes test with minor refinements to our Compatibility and Illumination tests. See the full changelog.
- Updated Nov 06, 2023: Review published.
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Test Results
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Design
Performance
Keystrokes
FeelTactile
Initial Force33gf
Peak Tactile Force49gf
Actuation Force44gf
Bottom-Out Force58gf
Actuation Distance (Pre-Travel)2.0 mm
Bottom-Out Distance3.0 mm
7.2
Factory SmoothnessScratchy Factor33.6
Mid Actuation Peak Noise-68.4 dB
Mid Actuation Peak Frequency1,013 Hz
Comments
Kailh Box Silent Brown: Main Discussion
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I’ve owned quite a few vacuums over the years including a dyson and two years ago I picked up a used Kirby Alvair 2 for $400 and I can say with absolute confidence that it outperforms any vacuum tested on this site… and by A LOT. My friends wife has a very nice Miele and after trying out the Kirby, she went and bought one…. to my friends dismay. New Kirby’s are crazy expensive. But one thing most people don’t know about is Kirby will completely refurbish your vacuum back to factory new one time, free of charge during your ownership of their product. They send it back literally brand new even if they received it all beat to hell. I should also mention that Kirby vacuums are 100% made in USA