Since you have LH LABS product, may I know if it's very neutral and transparent. I would expect some warmth, thickness for mids and bass. Does V281 and Liquid Carbon provides this? IMHO, I feel the weak point of the LH LABS dac/amp is the amp section. Pls correct me if I'm wrong as I want to make a correct upgrade. Thanks
V281 and the Liquid Carbon are both warmish, and almost tubey, but they do not necessarily sound artificially colored to me either. The GO2PROSE plays nicely with the LCD-X, more so out of the balanced jack, to my ears. It has been my favorite go to portable DAC/AMP with the LCD-X, simply because of the convenience of using that combo with my laptop in an easily and conveniently transportable package. Still, I realize your question demands more of an immediate A/B comparison between the //LCD-X + GO2PROSE// vs //LCD-X + Yggy + V281// vs //LCD + Metrum Hex + Liquid Carbon//. Unfortunately the balanced jack on the GO2PROSE has developed some looseness, which has been causing drops and cutouts in listening from that jack, so I have sort of temporarily retired it, while waiting for an RMA servicing response from LH Labs, which is taking a whole eternity to materialize. I can tell you, however, and even without the A/Bing, and taking into account what I remember of the LCD-X + GO2PROSE combo, that it held/holds its own in the sq department against the two other combos, which is already high praise, given that those other combos are full-fledged desk-top rigs
Now since you ask about the GO2PROSE's amp section, I need to mention that it does not strike me as being particularly weak source at all, or compromised in any way,, although I hasten to add that i have only tried it with my LCD-X, which is one of the easiest cans to drive, so it did not pose any major challenges to the GO2PROSE. It is entirely possible that other more demanding cans, such as the HD800 or the HIFIMAn HeK, might produce a different experience with the Go2PROSE, but I really can't say for sure, because I have not tried them together yet, However on paper, the GO2PROSE seems more than well-equipped to handle even these latter cans, in a very capable way. Ironically, before getting the GO2PROSE, it was rather its status as a Saber DAC which was worrying me, given things I have heard about a certain "saber glare." However, all related anxieties were quickly dissipated when I got the unit in hand, because the DAC turned out to be very well implemented.
Generally, while I will normally rank the Violectric + Yggy combo ahead of the Metrum Hex LC combo, and the GO2PROSE, in that order, I hasten to add that there is really no bad combo among those three, and I have been very happy with them all. I wish I could be more helpful, but that's as far as I can go this evening.