Nice review. I've always been EXTREMELY curious about this legendary IEM.

Do you listen to any Korean Rap by any chance? If so, who should I listen to and compaing this to the LZ-A4 which one do you like better?

@seobon Hi. I also have heard the LZ A4s but not to extensively for a review yet ! I usually listen to it alot first to find any imperfections such as fit, comfort, sound, built etc. I listen to korean rap and infact I make my own rap as well... I think ZIko's productions are exceptionally good on the IE80s but with the right filters Tablo's rap sound much more relaxing and catchy on the LZ A4. Ziko and Tablo have very different rap style on the spectrum so hope that helps explain things alittle. 

I wonder if Sennheiser will ever upgrade this model, it's been overtaken by newer innovators in many ways.

@Intensecure Hi. I think although other newer innovators have made some fantastic products, which is exciting I think sennheiser has a very strong foundation and certain signature when it comes to dynamic drivers ! But I do see your point ! I wonder how much better it can get with an upgrade ! exciting thoughts

Hope I can win this... Just wondering what you think could be improved?

I wonder how it compares to the Sony XBA-Z5?

sounds like an excellent IEM! does it need amping??

How would you compare them with other IEMs in the same price bracket?

@ronaldwu the comfort for sure. 

@Onny Izwan Sony XBA-Z5, did not have time to hear them enough but heard them as my friend owned them. To my ears, they had sharper highs and definetly not for portal (isolation is an issue)

@drbluenewmexico No it does not REQUIRE it. But it can benefit from a dac 

@jeffhawke thats a vague question but I would say in terms of dynamic iems, certainly out performs many on the same price point 

What criteria are you using to determine who wins the pair? Random numbers generator? Whoever has the best profile pic?

Im really hoping it's the second one, I've got that in the bag, baby!

@DJ The Rocket it is going to be random number generator. 

Nice review.. Hope I win xP

thanks for the review! hope i can win

I own the IE8 for years but I'm anxious to hear these IE80's. Reading your review, they must be better sounding, comfort won't be a problem though. And honestly, I refuse to pay 700 euro's for the IE800. Greetings from a Sennheiser addict!

how is the connector at the ear peice 

@Trippin Thanks ! best of luck ! 
@dkng27  Thanks ! best of luck !
@Hifiverslaafde you are definitely right! comfort differs from person to person. 
@RandomHajile Connector is a 2pin configuration, pretty stiff at first but not too bad.