You can search "Earthquake Sound ISO-200 Hum and Buzz Kleaner 600 Ohm Ground Loop Isolator with RCA to XLR Signal Conversion" on Amazon. They are $36.95. I can't say that it will solve your hum problem because those can originate in many places and the source can often be difficult to pinpoint, but if it doesn't work you can always return it for a refund. I hope this helps. Best of luck.
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!!