Yes, the Klimax Kontrol is simply wonderful! I love this thing. And if I were going to buy a second acrylic shelf for a Q4, the Kontrol is definitely what I would have resting on it. But first you might also want to consider a Quadraspire Reference Wall Mount (has an acrylic shelf) for your LP 12. This should actually make more difference than what I heard with one under an Ikemi.
As to Chakra 4200's, I think you are going to be extremely pleased. They are a delightful step up from the C4100 series amps when run passively, and I anticipate the difference will be even greater when run active (which I haven't heard). I haven't done the A/B of a Lingo I to a Lingo II myself, but I am certainly happy with my own Lingo II.
Chris
P.S. Where are you located?
As to Chakra 4200's, I think you are going to be extremely pleased. They are a delightful step up from the C4100 series amps when run passively, and I anticipate the difference will be even greater when run active (which I haven't heard). I haven't done the A/B of a Lingo I to a Lingo II myself, but I am certainly happy with my own Lingo II.
Chris
P.S. Where are you located?