Got the OTO Line SE up and running. I'm only using my Marantz SA-KI Ruby as a source as I'm still waiting on some interconnects to get my TT connected.
First impressions are that the OTO and my Luxman L-509x are more alike than different. I'm not hearing a night/day difference in tonality, soundstaging, resolution. That speaks, to me, of the quality of both the OTO and the Luxman.
I was ready for 'dark' warm etc, but really the OTO is tonally balanced. Yes, there is a teeny bit more body in the mid-range and the top end does sound a weensy bit softer, but overall I'd characterize the sonic presentation as relaxed and natural.
I've only started with some jazz at low/moderate levels - but it's a vg match to my AN-K/SPx SEs.