I'm not putting any evidence on my claims, so you are probably correct. That said, sometimes a placebo works, so maybe this technological placebo makes me enjoy the music more? I've also got a tube amp I'm not even going to pretend to defend, but I like it all the same.I'm not a deity, so this is just a guess: I wouldn't be surprised if that 'also' is actually the main cause of your impression. The idea of R2R and your admiration of the design fabricates an audible difference in your mind. Not that there's anything wrong with that. An impression is an impression. But it shouldn't be allowed to skew any attempts at finding causation.