Couldn't agree more. I'm also leaving mine untouched and paired with Analytical pads, they're just perfect that way.

What colorations are you referring to? Elevated highs perhaps? I was planning on buying an old Classic purely out of nostalgia for the good old days, as it was the first DAP I used to own. I also happen to own DT1990, so I wonder if they would make a nice pairing together.

Never ever have I experienced app crashes using XDP-100R. I'm a heavy fan of both Tidal and Spotify and I have the newest version of those apps and the DAP firmware installed.

It seems my IEMs aren't so power-consuming, since I never go beyond 6-7 with them, even in the street. The same applies to my AKG K550s - never crossed 20 at the scale. Lol, my hearing must be magnificent

Thank God it's not XD