tube rolling with Schiit Freya +

Go here and ask Kevin if you've any questions.

OP,
For 6SN7's I really like the NOS RCA red base some of the best tubes IMO of this type. they also rated to last 10,000 hours. I run them in my tube amp and am quite happy with the tubes. detailed with extended bass mids and highs. smooth and warm but not over the top. just a great performer. 


mkh1099,
15 days is plenty IMO. few days to burn in and the rest to evaluate seriously how much time do you need to decide if you like something or not. I don't know a dealer who'd give you their equipment for that long either. oh that 48 hours at the factory is primarily a stress test to make sure there are no short lived components in the item.

 My suggestion to you is get it home hook it up and let it play all day and night for the fist couple days, you do not need to have the amp on down stream either so it can run 24 hours a day, FM tuners work great here if you have one maybe a streamer or CD on replay. 4 days is just about 100 hours you will know by then if you will like it or no,t 8 days is 200 hours by then your fully settled and you still have a week left to evaluate. 

Glen calling out people on their schiit for decades, ok that was play on words no offence. 

I'm not sure about my Freya burn-in...it simply sounded great from day one (a couple of years ago...original version). I tried all sorts of tubes and landed on NOS GEs as my fave...a taste thing. I'm now breaking-in a Schiit Aegir amp...it's amazing, and if it gets any better (been 2 days) my head might explode.

I'm not sure how much burning in the Schiit stuff really needs.  My Vidar did not go through much change, and neither did the Saga.  And the Freya+, with maybe 75 hours on it so far, hasn't gone through changes I've noticed.  That is to say, it was pretty damn  impressive out of the box.

It's my first tube pre, so the following comments should be taken with a grain of salt, but it gets pretty warm after about 1.5 hours.  Even hot, though not too hot to touch.  But I was wondering about some kind of active cooling, just to sate my OCD tendencies!  

Way to go on the Aegir, Wolf, you keep one upping me!  I bought the Freya+ partly based on recommendations such as yours, so keep a lid on the Aegir praise until the end of January when my audio-use-only cc gets paid off, will ya?

Whether or not the Freya+ needs break-in (and I think it needs very little) new tubes need a good deal of break-in to sound their best.  NOS need perhaps 50 to 100 hours of use.  Current production perhaps half that.  The time can be reduced by just letting the tubes burn for a couple of days.

Most (or should I say many) so-called NOS tubes don't need that much, or any, for they are not NOS, but really pulls that may test as NOS.