Hello ,   I am going through exactly what you went through, It started 6 months back where my haring started to fluctuate and there was a hiss T . 4 to 5 ENT , mental trauma etc. The sound is not clear dropping and lost some BASS as well on the ear. I cant even use the headphones for 30...

How does the e10k sound when compared to the e10 ? E10 was very warm and more treble rolled off .