Having been around the forums a good number of times over the last few years I finally have a question that I hope you of more knowledge than I can help me answer.
I bought a pair of SONY XBA-40iPs IEMs and firstly, they sound great, a real step up from my usual earbuds as I finally have a job and I splashed out a bit.
However, my first listen struck me with nothing but horror. On my iPhone 4S they sound great, but only at high volume.
when the volume dips below around 8/10 (too loud for me to listen to at any length) the clarity stays crystal clear for a few seconds before suddenly distorting and introducing a great deal of 'fuzz' and apparent low end clipping. As soon as I push the volume back up again the clarity snaps back and they sound fantastic again.
I cannot replicate the issue on my MacBook, on which they sound great at any volume.
Could my iPhone's jack/sound chip be failing? Is it a burn-in or impedance issue? I have heard Balanced Armature monitors only need a very short burn-in.
It would be great if you guys could shed some light on the situation, as my primary music player at work is my iPhone!
Cheers In advance!