So many good reports out weigh the few bad to me, about noise with the Freya.
Sure for those kind of low dollars ($699) you get cheap 6SN7 or 6H8C tubes with it, and there are going to be the odd bad noisy one, but I was told by owners they send out asap replacements if you do get that.
And spending $7,500 on the Audio Research LS28 will get you, matched selected 4 x tubes, but it’s also costing >10 X the amount and some reports that it’s nowhere near worth the money when compared to the similar 4 tube Freya.
Cheers George