Note that Windows 10 assumes this to be a Microphone…

Now select the Recording tab, my IC-9700 is labelled as 3- USB Audio CODEC. You can type Win-R (run) and enter mmsys.cpl to open the sound settings applet without searching through (1.0E+6) setting screens first. Next step, is to check Windows sound settings. Not only in the block diagram, but also in the schematic, it can be seen that main audio (UAFA) is connected to V-IN-Left and sub audio (UAFB) is connected to V-IN-Right of the USB audio codec. Given all the “at the same time” features of the IC-9700, I resisted to believe this to be true. Some sources on the Internet mention that only main band audio is output via USB. Since it has a stereo USB audio interface build in, it’s logical to expect the IC-9700 to output main and sub band audio at the same time over USB as well. In DV mode, it can decode two digital signals at the same time, something even the IC-5100 cannot do. Icom’s new IC-9700 can receive two bands at the same time.