Micheal, Nice review, and I'm only half way through it (got distracted, and ended up here... Squirrel!). We hear the M8 the same - wonderful sound. Portable (almost barely), desktop worthy - hell, it IS my desktop amp. I sold my iBasso rig the day after I got the M8. The sound quality of the M8 is in a different league than the iBasso rig was, and the PB2/DB2 stack was darned fine - for a portable. The M8 doesn't (or shouldn't anyway) come with the "for a portable" qualifier. I don't have gear on the level of yours, but I had a couple of fairly nice desktop rigs in the past. I will be the first to admit that audio memory is fleeting, but I do not recall either of my "higher end" rigs besting the HIFI-M8. This thing really is that good, at least to me. For the record - they were a Headroom UDA with DPS, and a Cambridge Audio DacMagic paired with a MisterX built Dynalo. Both very good systems. I just don't recall them being "better;" though in a side by side they may have been. Or not. Especially the Headroom unit. It was really good, but seemed to be voiced a bit warm on purpose.