H1 has a max output voltage in balanced mode around 4V. Standard H360 is between 9-10V on balanced. This can be great in certain setups, but also can cause problems when you want to use your own preamp which is not built to accept this bigger voltage. As several owners mentioned, the difference between running full output from H360 (VC on 63) or some value below, they don't observe any difference. Thus for such users, there is no point in trying to run H360 on 63 and can simply lower the volume to 57 or anything that suites their circumstances.
In my case, I can hear a clear difference between 62 and 63 (mind you, not in volume, but SQ).
I don't hear any difference in SQ from 0 up to 62 (just volume change), so I do agree with Lukasz that this is a very high quality VC.
I think for users who can hear a SQ difference and want to use their own preamp and the preamp is clipping on 63, then one solution is to ask Lukasz for gain adjustment. Majority of manufacturers would not agree to such changes, but Lukasz luckily does.
My H360 is now running 4V balanced.
Maybe for H360 v2, there could be a user selectable output gain, but no idea if such extra feature could impact SQ.