Audiophilepure

https://www.innerfidelity.com/content/astell-kern-t9ie-iem-review

“The IEMs themselves have an attractive sort of fractal-type look to the back faceplate, otherwise they are quite smooth, sort of a metallic grey color and very small. One of the smaller high-end IEMs I’ve tried, and I ultimately found the form factor more comfortable over long-term listening than some of the moulded shapes of larger IEMs. Cabling on the T9iE is a very high purity Silver and OCC Copper hybrid 4-pole design carried over from last generation’s T8iE. The cable is quite thick compared to many IEM cables I’ve experienced and I personally would prefer something a little thinner for truly portable use, but for my purposes of airplane and seated listening, I had no issues at all with this cable. I will say that as thick as it is, this cable is remarkably flexible.”