Well, I've been A/B comparing the AA IC-1 and IC-3 for several days now. I probably have around 10 to 15 hours on the IC-3. Maybe it has something to do with my 50+ year old status, but I am having a real hard time hearing much difference. In the mid-range, I may actually prefer the IC-1.
I have the IC-1 connected to the front L/R multichannel input, while the IC-3 are connected to the MD/DAT input and selecting "analog direct". That way, I can switch rapidly between them.
I have the IC-1 connected to the front L/R multichannel input, while the IC-3 are connected to the MD/DAT input and selecting "analog direct". That way, I can switch rapidly between them.

