So I just got my Diana V2 and she is great It's making me debate on whether to keep the HD800s though I think they complement each other, one being more intimate and the other more open. I am using the Mojo 2 primarily and she sings beautifully, the portable setup is nice for me to have since I can take it to work/school/trips. Coming from IEMs(u12t, IE600) mostly, I am not sure how scaling for the Diana V2 works. So volume on the mojo2 is plenty, She sounds amazing, I am trying to see what is the next step, within reason. I've been thinking about either getting an amp like the A90D and using the mojo2 as a DAC, would that make her "scale" better? the a90D is useful for my IEMs and sort of transportable for trips as well. I do plan on getting a wa7 next year. So its not one or the other type of situation, Bottom line, would a dedicated amp make her improve sq/scale better?