Very interesting about the dynamics. I guess I will have to try and hear the ECD-1. I already have plans to hear the latest Birdland. Was this with the Electrocompaniet preamp in your system, or did the Placette go back in (I can not recall if you already sold yours or not)?
With regards to the highs, detail, and musicality, did you try re-tuning your RM40's, or was this based on the settings with the ECD-1 in your system?
As far as musicality, I can certainly understand this. I have heard many players and DAC's that could be subjectively called more musical, and can draw you more into the music - but they tend to have a little "seasoning" through some added sweetness or warmth, in my experience. This can of course be a huge plus depending on your system or preferences.
Thanks in advance for any answers you can provide, and for your impressions!