Worth upgrading from Morrow MA4's?

A point to keep in mind regarding analog interconnections (I presume you are not using an MA4 for the digital interconnection), is that the longer the length of the cable the greater the difference the cable is likely to make. Also, higher output impedance of the component which drives a cable will tend to increase sensitivity to cable differences. Your preamp has a considerably higher output impedance than your DAC.

Also, everything else being equal balanced interconnections (which I presume are what you are using) will generally tend to have less sensitivity to cable differences than unbalanced interconnections, especially when driven from a low output impedance.

Good luck. Regards,
-- Al

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

Actually, the Mogami Neglex cables are much less expensive than $200, as can be seen here, unless unusually long lengths are required. (Note, though, that the indicated prices should be doubled for a stereo pair).

Those cables seem to be the de facto cable of choice in pro audio applications, BTW, which presumably says something about their reliability and build quality. I suspect those were among the reasons for Ralph's recommendation.

Regards,
-- Al

05-04-15: Springbok10
So even more evidence that this is all a crap shoot in most instances, supporting my thesis of trying cheaper first, which was all I was trying to say!

One more reason that would make sense, IMO, is the short lengths of the cables Rrolack requires. As I alluded to earlier in the thread, nearly all of the effects an interconnect cable may have, including those that are technically explainable and quantifiable, as well as most of those that are controversial and/or debatable, are proportional to length.

Paul_Graham, I suspect from your system description that the various MA cables you described using were unbalanced, and I suspect that the OP is and would be using balanced cables. Consistent with the comments by Atmasphere in the thread I linked to (and with my initial post in this thread), I would not extrapolate any conclusions about balanced cable differences from experience with unbalanced cables. Especially if the balanced cables are driven from a low output impedance, as is the case with the OP's DAC.

Regards,
-- Al