After burning in for approximately 80 hours, the FX101 is still tearing my eardrums with the harsh treble. The hard plastic packaging was thrown away, hopefully return is still accepted.   Again, I'm very very impressed with the overall sound quality FX101 provides, except for the treble...

Thanks, DsNuts. So far, I've only been listening with them casually at work for 3 days and burned it in for 8 hours with bassdrive.com during my sleep last night. I will give it another 80 hours of burn in before I make the next call.During burn-in, do you keep the volume at max or at normal...

Quote: I bought the 101 after reading all the positive reviews on this thread only to be put back by the horrible piercing/harsh treble.   As you can see this is my first post on the forum, I'm beginner in the headphone/earphone gear compartment. Are 'burn-ins' really necessary for...