f you check the video, you can see how silent it is. 

Qanba in recent years has been recognized in increasing their market share with their popular line of arcade stick controllers, most notably, their Qanba Obsidian, Pearl and Dragon which still remains their main focus.  In recent years, their research and development team have been working toward designing and producing higher quality parts for their controllers.  Most recently, in 2021, Qanba released their mechanical pushbutton, the Gravity which has been extremely popular and has made a huge impact on increasing their presence in the parts industry
During the same period, Qanba was working on making their own custom joystick, one that is silent in particular as this sector of the market as there has been a higher interest from both professional and casual gamers for this
Choose Your Type
What's interesting here is Qanba developed two joysticks using two different types of switches.  One is from Omron which is the silent linear switch found in their Gravity pushbuttons.  The other type are switches from Cherry MX Grey.   Both of these switches features noiseless feedback, which is the main intention
Easy Installation
The mounting plate on the Qanba Gravity Silent joystick is the same dimensions as Sanwa Denshi's JLF series. So compitable with sanwa