Hi Spa03,
I have tried your advice and am still in the middle of working with it all. I changed cables to the copper, SE cable which did have an effect, but did not tame the harshness much at all. What it did was take away the energy, fullness, immediateness, power of the sound all around. Better yet when I went back to my old Cowon PM2 which has a smoother sound than the new (balanced) Fiio M11 Plus Ltd. BUT I felt I had lost the gains I had made with balanced power. Against intuition, I changed back to balanced with an all silver cable and it is better yet. Not perfect, and this MIGHT be because they are still breaking in. So when I get a final read on the KL 07m I will write it all up, let you know. Getting 90% of the way there now, hoping the last bit will tame down and start singing. NEVER experienced such drastic changes with break in as drbluenewmexico suggests, but am seeing it this time around.
To be cont.
God Bless,
Wayne