20 Hz Test Tone 1 Hour

20 hertz test tone with a single sound frequency that runs for 1 hour.

[@BryanWilkinson-bd2eg]

Great useful site, thanks

[@chrisstopher2277]

It feels like my skull disappeared and someone started massaging my brain wonderfully l. This is trippy.

[@JustKev_21]

Nice my sub is now broken in

[@skelhorn777]

Cheers mayne

[@user-jg8bi5kw5l]

try humming along with it its funny

[@user-gf3km2ut6i]

20hzは怖い感じ、吐き気して来る、1hの耐久は不思議だLol

[@nouhaylamoumadi2231]

oh realy

[@huesped-iu3wh]

Weird!!! I can hear this frequency better with my right ear but not a 16.000 hz frequency that I can hear better with my left ear

[@Joeys-tech61911]

What are you expect it’s a low frequency are used it to blow my speakers on purpose and they can accidentally blow your speakers when you leave and don’t want it to blow

[@Dios_of_Autumn-1999]

I got brain aneurysm from reading this

[@user-cl6vp9ko1x]

Почему звука нету на 25гц,..ну очень смешно!!!😊

[@user-aaa111qqq]

下肢20~70Hz

[@michaelpropes7329]

Lol