Rhodium plated Furutech plugs take a really long time to break in. It took FI-50 NCF plugs close to 400-500hrs to settle in my system. They sound fantastic just be patient. Clarity, air, texture. I don’t hear any harshness
FI-28 R took less time to break in, around 200-250hrs and are a bit warmer sounding than the 50 NCF.
Furutech power cords are also great.