Need help RCA Interconnects but new Balanced Gear

As you may already know, balanced cables have two conductors plus a shield and single-ended cables have one conductor and use the shield as the negative conductor. RCA to XLR adapters with your single ended cables will not allow your differentially balanced components to work in differential mode.

I have used differentially balanced equipment (Ayre/Krell/Classe' Audio) with the properly configured XLR cables for many years and can attest to the superior sonic performance over using single ended cables with the same equipment. Additionally, I can definitely hear differences between different XLR cables with my equipment. It is possible that a lower-priced XLR cable would sound as good or better than a more expensive single ended cable with your differentially balanced equipment.

Make sure that whatever XLR cables that you end up with have the shield connected at both ends to optimize the noise cancellation benefits of the differentially balanced circuitry. For some reason (lack of proper understanding?), some cable makers only connect the shield at one end and leave it open at the other.

Dave

If you decide to go with the adapters, let me know, I have 2 brand new Cardas adapters I may need to sell.

There are some high end interconnect cables that differ between XLR and RCA versions only by virtue of the connectors that are used. In those cases the cable usually contains two conductors that are symmetrically placed within a shield, with one of those conductors serving as the return (ground) conductor in the RCA configuration. I suspect that in most of those cases the shield (if present) is just connected at one end in the RCA version (there are technical reasons for that, in cases where the shield is not serving as the return conductor), and at both ends in the XLR version.

Looking at the photos provided at the Darwin site, my guess is that is not the case with your particular cables, and the wires used for the two versions are different, but I can't tell conclusively. So it might be worth checking with Darwin to see if it would be possible, and make sense technically, for them to reterminate your existing cables with XLR connectors.

Also, I would particularly emphasize this point which Dave made in his post:

It is possible that a lower-priced XLR cable would sound as good or better than a more expensive single ended cable with your differentially balanced equipment.

I would not assume that the sonic attributes you have found to be preferable with the RCA-version Darwin cables as used with your previous components, relative to other cables you may have tried, would occur similarly with XLR-version Darwin cables with your new components. Even if the components were the same (which apparently they are not in this case), balanced XLR and unbalanced RCA interconnections operate on different principles, and involve interface circuitry in the components that are being connected that is not the same.

If you would prefer not to make your own cables, as Elizabeth suggested, you might want to consider trying relatively inexpensive Mogami Gold Studio. It is the interconnect cable of choice in pro audio applications, and if you research past threads here at Audiogon you'll find a number of audiophiles reporting its performance as being comparable to or exceeding that of much more expensive audiophile-oriented cables in their systems. Although as might be expected that finding is not unanimous.

Good luck as you proceed. Regards,
-- Al

I use Mogami 25' balanced cabled between my BAT VK-3i pre- and VK-60 power amp with stellar results.