Oh Yeah, it is my ears, they aren't good enough.
Or, maybe the folks at Sennheiser didn't feature a new sound signature as part of the product launch because there is none.
It doesn't matter, you will choose to believe what you choose to, have fun with your re tuned IEMs. Sennheiser must have just forgot.
I have had both IE8, and IE80 for some reason they sound different, where as the IE80 sounding better, maybe the above poster feels they sound the same.. and is too farmiliar with the IE8s sound.. none the less if you open the IE8, and the IE80's you will notice a difference in drivers etc.. as proposed by a sennheiser german technician.. technically some people just dont know much about there product.. they are indeed replacing the IE8's
Any a-b should be done with the IE8 in hand, provide photographs, so trolls don't write silly things contradicting things which are so obvious, not even "I've had the IE8 previously but don't have them now, so going from memory" is reliable.
I don't choose to believe anything, I compare, I listen, I have good ears, I have posted my pictures and impressions, where are yours? especially the photos.