Interesting experiment Purrin. Yours seems to be pretty solid if it takes that much "beating" to get any serious ringing. If I had to guess, the microphonics (most likely) vary from unit to unit. That could explain why some people find it more distracting than others.
As has been mentioned, the guys at Schiit are 100% open and honest regarding the microphonics, so they should come as no surprise, nor should they be considered a "serious issue" by those that have read up on them.
As long as the amplifier performs "as advertised" (and I think most everyone agrees that it does) then that is all we can ask for.
Following this thread has really "lit a fire" under me, that makes me want to order one as soon as funds allow. Unfortunately, it will be a while before I can (or need) to order one up. I finally decided to pull the trigger on the Emotiva DC-1 DAC today, so that will reset my savings, and it takes a long while for me to build up again.
In the meantime, I will live vicariously through everyone in this thread. HA!