I'm on m8 and I don't have any double lines in buildprop, not calling you a liar I'm just saying lol,
But this combined with a jbl/hk hybrid I mixed up and project desire and of course v4a and xhifi I'm getting a really great quality sound deep clean bass and resonant Crystal clear top and the sound stage and vocal effect are amazing,
I mainly listen to reggae and it's sounds pretty awesome,
Thanks to the team for some great modding
Sent from my HTC One M8 using Tapatalk
htc.audio.swalt.mingain=2072 (this one causes the most problems at first since my device starts off at a much lower value.
The lines may get overwritten with some devices, I don't know. I'm just reporting off a hypothesis, I've ended up with doubles of a couple lines on some of my devices. My tablet being the only one without double lines since I barely use it anymore and haven't applied any modifications.