Is Listening to This Tone Dangerous?

Hello there,

Today I was looking for some relief through sounds on YouTube and found this tone:

7500 Hz Test Tone Pure Sine Wave 5min kHz

(only listen to it on very low volume!)

While this tone plays, my hyperacusis is simply gone. I've tried many things, but it isn't there.
After this file, mytTinnitus is another tone for ca. 30 Seconds, before it becomes normal.

My Questions are: Is this dangerous? Or is it good, when it has an effect on me?

I've read the description, but wanna be sure.

 

It is not dangerous and normal, I use tones to mask my tinnitus sometimes, can reduce my tinnitus to 20% but it does not last long 30 secs to one min mostly .. would love to find a way to make it last longer ..

 

thanks for the reply.