Lamm ll2.1 a microphone???

I've experienced something like that with a loaner phono stage that was using Telefunken triple mica tubes. If I lightly moved my finger across the case, you could hear the drag of my finger through the speakers. I own a similar phono stage without those tubes and without the microphonic effect.
Kenny

Hmm. I also get the same effect. 
The slightest touch to the chassis or volume knob is picked up very clearly. 

I even picked up symposium roller blocks to see if that would help. 

It's the tubes, unfortunately.

Didn't have this issue with my LL2 Deluxe that I owned a few years ago but my LL2.1 Deluxe brand new right out of it's crate had the issue and it was a problem with one of the tubes, switched it out and all was fine and have had no issues for the 18 months I have owned it.