Rock's X4A-1511 journal

[Diablojack00]

[quote="NOMAD" pid='265142' dateline='1723857305']

I use a fan, positioned about 6ft from my head. I haven't had any issues using hybrid over earbuds. Also, I've played only ultrasonic loops since I began US. I keep my phone within 2ft of my ears during my loops and don't have any issues. 

You can use the Frequensee app to get a sense of the difference between the fan's sound frequency and dB versus that of the ultrasonic loop. It's not a perfect measurement,  but it might help to put your mind at ease.  I use it regulsrly to verify that my phone's speaker is producing the ultrasonic audio.

@NOMAD

Thanks I'll try that.