XLR to RCA conversion


I am using a balanced preamp (Atma-Sphere) with a single ended power amp (Primaluna).
It has a ground loop hum that I can’t seem to get rid of.  I am told a transformer will probably work.  Can anybody recommend an XLR to RCA transformer that will work?  Brand, model, and who sells it?

Thanks in advance!!

hifinut51

why not just use a shure xlr to xlr iso xfmr they are use in profesional sound 

 

systems all the time I use them when i am mixing corporate shows to quickly isolate a channel as i don't have a lot of time for trouble shooting a system

when getting it up and going

 

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Whirlwind ISOXL Line-Level Isolation Transformer, 3-Pin XLR Male/Female Connectors at Amazon

Jesse at Pine tree makes a balanced to unbalanced converter. It is an amazing piece. I use it between my Lumin D2 and amplifier.