I would avoid Upscaleaudio..... period. Go through ARC. I tried to upgrade tubes in my VAC integrated amp, and Upscaleaudio basically told me to take a hike, Kevin said he would not sell me his precious tubes.....they were too good for my VAC. There are enough reputable tube sellers out there that I do not feel I have to kneel at the altar of Upscaleaudio just to buy some tubes.....life's too short to deal with dweebs.
Cheers,
John
Cheers,
John