Hello, I used LG v30 phone. Everytime I step up volume up, i hear different sound. Example for 1 to 2 is different, 2 to 3 different sound too.
Max 75 step volume
I usually used volume 1, Is that okay? 
Oh, by the way I'm beginner on binaural beats, sometimes after 30+ minutes I feel dizzy. I want buy your audio about binaural beats, but I feel sometime comfortable sometimes not comfortable. 

Anyway, thanks for this audio! 😉
Sorry for the super-delayed reply, my life was crazy these last 3 months!
It sounds like your device may have some kind of filter (surround enhancer, bass boost, echo, reverb, Dolby, Atmos, DTS, Beats, etc.) double-check to make sure it's disabled. If you're not yet ready to buy the Megapack, you can download the beginner sleep track for free from my site... http://bit.ly/bestbinaural
Andre Tanursidin