Thanks for your comments, Denis (Springbok10), and for sharing your experience. As a point of information for everyone, Ralph's (Atmasphere's) designs, in contrast to many and probably most others, meet the criteria he stated
here for providing complete immunity to interconnect cable differences (assuming the cable isn't defective, of course). His comments in that post BTW, including the proof that he offered for his contentions, strike me as extremely persuasive.
I would assume that is why he recommended Mogami, and is presumably the main reason why Mogami worked just as well in connecting your MP-1 to your MA-2 as the $5K cable.
In addition to the linked post, see his responses to a couple of questions I asked later in that thread.
Regarding the OP's equipment, I'm pretty certain that his ARC preamp will not meet the criteria Ralph stated. The Bricasti DAC might, but without being familiar with its design (especially its internal grounding configuration), I have no way of knowing.
Best regards,
-- Al