Penon OSG

most of all the attributes that will endear you center around the smooth repositioning and glorious clarity/pace the OSG offers users. It simply cleans up the town, going and attenuating the bass baggage, spreading-out the midrange into the biggest stage you (or I) have ever heard. And adding detail due to comprehension of a blacker background. None of these changes come-off as strange or even sonic mishaps, but are a welcome difference that results in never wanting to take the IEMs out of your ears.

https://www.head-fi.org/showcase/penon-osg-graphene-infused-spc-iem-cables.24554/reviews#review-30754

Penon Audio OSG cable is fantastic cable when it’s match with the right partner. It has great clean, and clear sound with neutral tonal balance. It does fantastic job on bass frequencies. Also, it is so beautiful and it will match with your earphone beautifully. Penon Audio continues to impress with their latest work and it prove that no need to spend thousands of dollars for the good cable. OSG is one of my favorite Penon cable so far, I can highly recommend who wants to get neutral, balanced cable.

Superb higher grade of cable. First ever graphene infused higher end SPC cable. A blacker background giving better perceived note separation. Better definition and clarity from bass to treble. A very nice cutting edge achievement for Penon.
You can read more of my review here. https://www.head-fi.org/showcase/penon-osg-graphene-infused-spc-iem-cables.24554/reviews