Yes, it really is. I wasn't surprised at all to see it end up as one of the highlights of CanJan SoCal in member discussions. The Liquid Carbon gives me almost everything--definitely in terms of tone and richness--that the Liquid Gold did, only for my headphones with more modest power requirements (than, say, the HiFiMAN HE-6).
With most of the new high-end headphones coming out being reasonably sensitive--and, as a result, well within the Liquid Carbon's wheelhouse--I feel like I'm getting the Liquid Gold, only adapted for use with more of my headphones, including my more sensitive closed headphones, and even including IEMs (which I'd never consider plugging into the Liquid Gold).
That I can get this for only $599 makes the Liquid Carbon one of the biggest no-brainers for me in quite some time (assuming I get in, which, like many of you, I'm waiting for Texas noon to do). So, at Texas noon, if you feel some pushing and shoving, look down (I'm short), and you'll likely see my face.
(It's 11:54 Texas time. Six minutes...six minutes...six minutes...Doug E. Fresh, you're on!)