I would really love to lay my hands on a used amp modules for E01 and E02 as well to make further tests and see how this two amps work out
I really like this little dap with such unique feature to swap dac like this is simply remarkable!
My feelings suggest that the single ended E01 might be the best option actually because it has the big 9038pro dac even in single combination it surpasses the dual 9038q2m! In specs! Being single ended that usually bring more natural feel to the sound, I found all balanced sound are slightly boosted in perception less natural... Thas bring the only problem to single ended is the lack of power for hungry headphones that all.
If some folks have E01 and E02 for sell please PM me
I just got my E01 last week based on the exact line of thought. After listening to A01 and T01 in both 4.4 and 3.5, I have become a fan of Cayin's single ended design. Single ended out of A01 and T01 sounds really good, leaving me with an impression that serious design went into both outputs.
But then, I think I will eventually end up with E02 just to hear it.