[Allanmarcus]

Hello. I have three sets of IEMs with the same tips (Comply TS-500s), but two sets (DN-1000, BlueBuds X) are very comfortable, and one set (IE80) is not. Is this because of different insertion lengths? Any ideas? 
 
Thanks

 

[Comply]

Thanks for reaching out to us!  Some IEMs have longer sound tubes which could affect the depth of its insertion. The comfort level could also vary due to the design of the housing/IEM body. The wide body of the IE80 might not be allowing the tip to be inserted as deep as you normally like it because it is pushing against the outer part of the ear.
 
It's hard to tell without actually trying out the three side by side but I hope this information helps! If you have any further question feel free to ask away!
 
-Comply