Thanks @Torq, soooo if I had the money I should definitely go for the Furutech plug, am I right? I already had those Oyaide plugs for a small interconnect cable between DAP and portable amp and they were great, but of course I don’t know if the Furutech plugs would have been even better. In my case: I have a upocc silver headphone cable and just reread in the specs that the plating of the Oyaide is silver/rhodium (on brass) in contrast to the Furutech which has rhodium (on copper). Do you still think that the copper would have a better synergy with my cable?