I would like to share my impression of comparing TT2 to Chord Dave. I feed both DACs with Mscaler and Chord 2go+2yu streamer. The headphone amplifiers I used for AB comparison: WA33 standard version, OG cavalli liquid gold and Headamp BHSE. Head phones I used: Abyss 1266 Phi TC, HD800s, LCD4, Verite closed, HE1000se, SR009 and SR007.
I had ABed these two DACs for about a week. They sound very similar to my ears although I can pass blind ABX test. Dave's sound stage is a little wider and its sound imaging is a little less distant comparing to that of TT2. Details and tonality are very similar between the two. To be honest, TT2's sound feels like Dave with level1 crossfeed (Dave doesn't have crossfeed in its DAC mode so can't compare directly). The layering of Dave sounds a little better defined than TT2 because of its closer sound field. Dave doesn't have the capacitor charging noise of TT2 which could be annoying when you listen nearby your DAC.
I would say TT2 is a great DAC and it is probably the sweet spot in Chord's DAC ladder for headphone users. On speaker system my impressions may change. It has a more powerful headphone amp than Dave too. I also did comparison between TT2 and Hugo2 a while ago and I could tell TT2 is noticeably better.