Originally Posted by
SLGO
Ah it’s tricky. Pure engine sound, it’s fine. But somehow there might sometimes be higher frequency noise accompanying with it. Not exactly sure what that was but definitely not welcoming. So I wouldn’t take my chances to sit in the mini cabin on long haul.
Now since you mentioned it, I recalled that I couldn't fall asleep becoz of an unknown high frequency noise while in mini cabin, whenever I slept on my side instead on the back. The noise could only be heard if you press your ear upon the seat. It was mini cabin 11D/11H. I didn't notice such a noise being in front cabin sleeping.