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View Full Discussion Got these today, pretty excited!
They were already set to the tubes that I had ordered through Massdrop.
I had a bit of an issue with a loud buzzing when they were connecting to source, regardless of the volume. I read that other users had issues because of unshielded cables and interference; in anticipation I already bought a nice shielded RCA cable. But I still heard buzzing at around 4-8 beats/buzzes per second with some random static.
After a little more research I realized there isn't a separate power supply block and so the supply isn't completely isolated; I was having a ground loop problem. Plugging the Little Dot into a 3-to-2 prong adapter (like this https://www.amazon.com/gp/product/B00B7PK1TC/) resolved the problem, for anyone who comes searching with a similar issues.