Are luxman integrated amps truly balanced?

I have compared balanced and RCA cables on a couple of systems and I cannot tell a difference. My Yamaha studio monitors are quite nisy using RCA cables. Balanced cables make them quite as a mouse. Maybe because the Yamahas are close to my two monitors that cause the noise

I have some nice RCA cables coming next week. Nothing crazy expensive but on par with the XLR i have. So we shall see. In the mean time has anyone tried inline attentuators to lower voltage output

 XLR carries a hot signal on one conductor and an inverted hot signal on another conductor.  A diff amp compares the two signals and amplifies the difference.  A +5 volt compared to -5 volt is a difference of 10 volts.  That's the 6 dB gain.

There should be no gain if Luxman followed the AES48 XLR interface standard, so apparently they do not follow AES48. Read the posts by @atmasphere (Ralph Karsten) in this thread:
https://forum.audiogon.com/discussions/when-to-choice-xlr-over-rca-ics
The consequence of not following AES48 is that some of the benefits of using balanced interconnects are lost. However, XLRs may still provide some benefit and you'll need to compare it with using RCA on your system.

Thanks for the article. The XLR is definitely louder than the RCA at the same volume level. The XLR output is 5.8volts the RCA is 2.9

@mspot

Thanks for the link.

I stand corrected. I now see the difference between xlr cable compatible components and truly balanced AES48 compliant ones.
Apologies to @paqua123