Thanks for the responses. What has complicated my sudden onset hearing loss is that I am also experienceing hyperacousis (sensitivity to loud noises/environments) and tinnitus (ringing in the ear).
Using the EQ has made a difference. I dont use it for all listening (lots of my LPs from the 70s,80s are plenty bright) but when I need a little treble boost, the ADC works well, and in the EPL of my AVA Insight pre-amp, contributes no loss or dergadation of the music signal. Works flawlessly and seems a good buy for $59.00. Not much helps the hyersensitivity or ringing, though.
Mark