your comment above got me to thinking..... and i did some research.
i put "Moon Neo 430 review" into Google. got about 20 quality hits. everything from big tech sites like CNET to personal audiophile blogs like our own Headphone Guru.
not one of them, EVEN ONE, was negative. hell, negative... i couldn't find one that was anything less than exuberant in their praise of the Moon. only a couple of those 20 thought that it was good, but not $4k good. the vast majority thought it warrants its high price tag.
please, double check my research. i'd honestly love to see these "meh" impressions you speak of. and that doesn't mean you quote some dingbat user-post on an audio forum, this one or otherwise. you could post a glass of filtered water on the internet and find a thousand people who hate it. and by the way, i'd bet dollars to donuts that 80% of any "meh" user reviews were judging it pre-300hrs burn in. that was the story with Steve Guttenberg at CNET, who started his review wondering what all the fuss was about until he burned it in thoroughly, then sang a 180 degree different tune.
all that said, the Neo 430 isn't for everyone. it was perfect for me.... because i value simplicity and and something at or d*mn close to "the best". i wanted an amp with an integrated DAC that could handle both my power-thirsty LCD-4 and my efficient Utopia and everything in between, and somehow makes them all sound at their best. and any future TOTL headphone that comes out that i might get. i wanted an amp that does not exaggerate bass, color the mids, or create sibilant highs. i wanted an amp that, as Tyll so perfectly put it "gets the hell out of the way of the music". i wanted an amp that makes listening to music at relatively high volumes for extended periods a non-painful event. i wanted deep space silence and maximum dynamic range. and i wanted an amp that will never, never be wanting for power.
plug all that into the calculator and the Moon Neo 430 pretty much stands alone in delivering that recipe.