I actually have the Glass Nexus mentioned in this article...as far as I can tell it is using a starved plate sort of design...I'm not sure how much real tube "warmth" you can get out of a 9v (2amp) wall wart psu...but I will say that in terms of dynamics it does a pretty good job keeping things in line and overall is a very nice pedal...just not sure of the hype...someone suggested its using the tubes as buffers before and after the shard processor...I am not sure how that's possible...
http://www.analog.com/en/content/damage_control_uses_sharc/fca.html
http://www.analog.com/en/content/damage_control_uses_sharc/fca.html