Nearly silent - I found these to be even more silent than my co-workers’ membrane keyboards. I migrated towards tactile switches on my other normal profile keyboards, so I was a bit concerned at the light operating force and linear switches on the Flow Lite. In the end I had absolutely nothing to worry about - the Hades and Specter switches both feel and sound AMAZING. I noticed my typing speed and accuracy significantly increase while using the Hades at work, and I believe the linear switch type is ideal for this low-profile switch given the shorter travel distance. The Hades do have a softer feel to them given the dampening silicone, but certainly not in a bad way - they still have an extremely satisfying mechanical bottom feel. These are a must if you have any concerns for sound level.

I finally got my switches after waiting for a long time and OMG it does not disappoint! It made my lofree keyboard like 3x better. LOVE love it - it's very silent. The only thing is the spacebar is clicking a bit but I probably installed it weirdly. If you're on the fence about getting it or not - GET IT. It's the ultimate thock and I LOVE IT.

I ordered these with the new Lofree Flow Lite keyboard and couldn't be happier with them. Very, very quiet and smooth to type on. It's no longer true that low profile keyboards can't be almost completely silent.