Awesome, thanks for checking Squid. I've already got a set of high end head phones on order.
Awesome, thanks for checking Squid. I've already got a set of high end head phones on order.
This got interesting.
The pulsing WAS caused by the iPhone. All my songs have started doing it on my iPhone. Even songs that I used these same headphones for in the past that sounded great. It took me a while to notice this new development, because it only is apparent on fairly smooth songs with a slow background.
I turned the phone completely off and back on. And it didn't go away.
So I did a forced phone hardware reset (hold power and front button for half a minute until it forces itself off).
That fixed it. No idea what/why/how, but doing a forced reset fixed the music pulsing issue.