I spent the last two days listening to the Heaven VI directly from the DX50 headphone out. I love the portability and the sound is warm and compelling. (1.2.2, brethren!)
I sure would like to stick with this. It is plenty musical. (1.2.2, brethren!) Detail isn't bad at all. The convenience is fantastic. Things is: this evening I just reattached my Pico Power. DX50 + PP + HVI = ...heaven.
The DX50 headphone out really is good. From the line out it is a fine, fine source. The Pico Power continues to amaze me.
(I have some heavy duty, i.e. thick, 3M Dual Lock that has arrived at my office. It might be time to lose the rubber band. On the other hand, I have a Miniaudio silicon case arriving at Jaben. Bit of a contradiction there.)