kingkikapu
100+ Head-Fier
All are really good on the Utopia. Silky and warm with great transparency but still needing a DAC would be the Cavalli. Including DAC the 430HAD is neutral and detailed. The Chord and Headamp are good but not the same game as the Cavalli Gold or SimAudio 430
I am up in the air about DAC's at present. I can either go TT and be done with it or do something more dedicated.
The 430 is sort of my favourite right now, but no balanced outs for monitors.
Tyll is probably right about GSX-Mk2 being a bit on the bright side for Utopia, but I have a few planars kicking round too that are on the warm side.
I have both the Moon Neo 430HA and the GSX-MKII and both are fantastic amps no doubt. Id have to give the nod to the MOON of the 2 simply because it adds a bit more power, tone, and tiny bit of warmth (to my ears at least. Others say it is dead neutral). The Headamp is a bit lean in comparison. All 3 will be plenty powerful enough as well. I haven't heard the Liquid Gold but from what I have heard is that the Gold will have slightly more bass than the 430HA while the 430HA has "mids to die for" from a comparison I read before. Gold is also only able to be bought used but they are hard to find because a lot of people love it. Might need to put up a 'Wanted post' in the classifieds. Hope this helps. I might sell my MOON 430HA with DAC later on (maybe in 2 months or so) depending on whether it is still worth having when I get the Chord DAVE. There is also Ragnarok (I'll also be selling) which is warmer then the Headamp GSX-MKII for cheaper.
Keep me in mind when you flip the 430. It is sort of my preferred unit right now, other than it doesn't have balanced outputs, but I am willing to maybe sacrifice my monitor connection if there is an attributable difference to the amplification vs going the route of say a HugoTT. From what I hear the DAVE drives Utopia just fine.
Dave is just too much money for me to commit. DAC's feel so volatile right now.