I was forming my very positive opinion of the FD5 during my 1½ week of usage and it did not even get the minimum recommended 100 hours of burn-in time. As a dac/amp I have been using the FiiO BTR5 connected via USB to my Samsung mobile with Tidal
It seemed that the FD5s with the supplied cable, of good quality I must say, were a tad bright, though no sibilance at all. I was adviced by our cable master
@Dsnuts to do some more tip rolling, which improved things immediately, thank you again.
It is unfair to form an opinion this quick, so I tied up my Samsung phone to the Ayre Codex, connected the FD5 unbalanced and what a surprise this has been. The FD5 scales up so well, all the very good aspects of these IEMs were clearly enhanced and the tad of brightness disappeared.
I am curious to see where this goes, after more running time.
Just wanted to share this part of my journey.