PENON Mix

Wow. Just wow. I have the ISN H40 with stock s8 cable. The s8 is high end itself as its also bundled with their top IEM , the EST. But I figured I could get even more with an upgrade cable and Penon recommended the Mix. Holy moly, its a stunningly bold and massively beautiful sound: more big controlled bass, more soundstage, more mids, more fluent highs, more clarity with depth and warmth. And astonishing height information! Its not wholly neutral. But the colouration is simply equisitely balanced. A phenomenal cable. For a phenomenal IEM. Eat your hearts out, Shure, Etymotic, UEars and every other major league wannabe out there. This is magic.

A specialist cable that provides in use a different experience than any cable I have. In fact there is this specific tone personality that I found present inside of every single use experience. At times that tone was an exciting welcome change, and other times it was simply too much spice, but none-the-less it changed the sonic landscape. When it truly was a welcome change it was almost profound, bringing along new levels of stage and detail, all at once bringing the IEM to a new level of clarity and dynamics never guessed possible with simply a cable change.

https://www.head-fi.org/showcase/penon-mix.25122/reviews