Considering switching to XLR cables,

I am sure it's gear dependent but in my experience, with two highly regarded sources, a Modwright Oppo and a Lumin A1 music server, the XLR outputs were far superior to the RCA's. 

In a little second system I ran a variety of amps and speakers with a Lumin D2 as source....because the pre amp and most amps only accepted RCA I was forced to go all single ended.  Amps were SS and tubes, speakers were Omega (2 different models) Sonus Faber, Harbeth, Sterling Broadcast and Klipsch.  I always had the same issue....the midrange was awful no matter what combo I tried.....kind of hollowed out and tinny.  Finally realized the one common denominator was the Lumin, thought about selling it then realized in all my Lumin experience I had never run single ended output cables in my primary system, always XLR, so I purchased Cardas XLR to RCA adapters on the preamp side with XLR cables....mid range magic returned.  Pisses me off I didn't realize it earlier as I fired some really nice speaker amp combos.

Unless the equipment is actually true balanced differential there is no reason to use XLR’s . As an example I have a Mark Levinson no.585.5 amp that is balanced. But my DAC is a Chord Dave. Even though my Dave has XLR outputs it’s not balanced (per Rob Watts) so using XLR’s is pointless. BTW I use Audience FrontRow Reserve interconnects

My system is exclusively XLR, except where it’s impossible—like my turntable and tube preamp, which use RCA. For cables, I use Mogami with Neutrik connectors. You can build or buy them pre-made; the pricing is very reasonable.

My thinking is simple: if it’s good enough for professional studios, it’s good enough for me. There’s no need to spend $4500 on XLRs with carbon fiber shells and silk-wrapped cables. I’d rather use well-engineered, proven cables with top-tier commercial-grade connectors—nothing flashy, just reliable and built to perform.

Virtually every cable I use, which are considerable, are XLR. I use them mainly because I have long runs. There are some instances where the output is doubled. I have used and don’t hear any difference between them. 

The morgami platnum are heaver gauge.excellent quality.xlr will give you a 6 db increase in sound level .has 3 wires and does not use the shield as ground like rca. Make sure the xlr are 3 wire .my mcintosh are cardus star 4 wire as the use the 4th wire to ground only source to lower floor noise.another great of xlr is long runs don't cause much voltage drop as rca does. So you can run xlr long to a monoblock amp near your speaker then short speaker cables helping sound quality. Resistances increase over length of wire but more effect ins heard in long runs of speaker wire.i am a believer in thick gauge wire. I like it so much I don't buy anything without balanced xlr. Enjoy the search.