I just bought the Schiit Freya+ and am using it with Klipsch XF-48s so, far it sounds amazing (I'm literally only a few hours in owning this). I wanted to get into tubes and so far it is ultra quiet, no noise, no hum whatsoever. The new Freya+ is supposed to be 20db quieter than the original but I've heard original Freya owners saying theirs were dead quiet but good to know the engineers were able to do that. Additionally, it's got a feature that only heats up the tubes when actually in use so, that's a good feature to prolong their use.
Already in the first few hours I notice more warmth but it's not overt, I'm sure when the tubes and preamp are worn-in it will improve. Soundstage is great, and it is amazingly clear and not muffled at all or what people call "bloomy." It's rather a nice marriage of modern tech and old school done really well.
I was also thinking since Klipsch speakers are typically usually strong in the mid range and highs, a bit of smoothing off the top end would for possibly a even better experience.
I've seen plenty of original Freya models going for a nice price, I was lucky enough to ****** a Freya+ from a vendor who bought it to do some testing and then quickly sold it so it's literally brand new.
If you have more questions let me know, but I'm still only becoming acquainted with it too.
EDIT: I've done so much research before getting this home. A lot of the noise typically come from bad connections with the sockets or putting in a tube with dirty pins. Google how to clean vacuum tube pins, I was amazed myself. I think the most non-invasive way I saw was with a Dremel using a felt tip to basically polish the pins, a dirty tube from the 50s was made to look brand new!