Is there one? I was under the impression that the 6SN7 has the equivalent mu (gain) of a 12AU7 tube. That's fairly low all things considered. There aren't many tubes used in preamps with a lower designed-in gain, as far as I know.

Like another said and you implied, it could be your amp. I don't remember Adcom amps being that unusual way back in the early and mid 1990s when they came out, but I don't know enough to say more than that. Yes, there is a small difference in volume between the passive setting and the JFET...

I cannot do that; for me there was a big jump in volume. Unless someone has a better idea, I'd drop Schiit note. They answer emails fairly well.

Are you sure the Freya is set to tube (output) mode? There are 3 output modes: passive, JFET, and tube. Each is louder (more amplification) than the previous. Check the manual. Before hitting the mode (output) button, make sure the volume control is set to very low. If it's on high, because it...

This is true for as long as I have been using separates: You should never turn a tubed preamp and the amp to which it is connected on and off at the same time. (Actually that probably holds for solid state preamps too.) The turn on sequence is preamp first, waiting for the Freya's flashing...

Probably, but if you buy direct from Ebay, from China, they'll be a lot cheaper. I paid $12 for 4 with $3.99 for delivery. It took about 10 -14 days with zero problems. $6.95 each plus delivery from Parts Connexion seems a bit steep. And they probably ordered a lot of 100 or 500 and got them...

Here on the Schiit LISST replacement page, http://www.schiit.com/products/lisst-tubes they say just that, "Have you ever wanted a solid-state Freya, Mjolnir 2, Lyr 2, Saga, or Lyr? Then a pair of Schiit LISST (linear, integrated solid-state tube) is what you need. Just plug a pair of these...

I agree with you, in principle. I suspect Schiit may also. In the warranty section, they say, "The warranty may not apply if the product is modified or tampered with. (this could be interpreted several way. "Tampered with" could be just removing the top, as we did ....). "is damaged by...

The Freya manual says: Q: Can I leave it on all the time? A: You can, BUT it'll dramatically shorten the tube lifespan. We recommend you turn it on and off as you need it. I agree with subsequent posters, that most tubes, once broken in, stabilize fairly quickly. I'd suggest 15 - 20 minutes...

Understood. As for 24/7, I wouldn't dare. Mine runs pretty warm to almost hot, but not quite. They say in the manual, not to leave it on if you not using it. If I'm not going to playing music for 2 hours or more, then I turn it off. My amps, which use tubes as input drivers, run a high...

What helped me on the buttons (hard to hold in place) was a piece of tape on the outside holding them in place, while I "played" with the LEDs. What I saw when I first opened it up, was totally unexpected. Such is life.

After 2 hours of playing those little lights, I almost gave up, took an axe to it and just ordered another one. It would have been simpler. However, I continued and eventually got it workable. Hard to believe it's as neutral as it is with tubes. 6SN7s and their 9 pin equivalent, the 6CG7, are...

Ask the original poster. Don't ask me. I only gave my opinion.

Do not remove the cover. 1. It voids the warranty. 2. You will never get it back on with micro tools, 4 hands and the patience of Job. As for removal, try a long nose pliers or an industrial tweezers. https://www.amazon.com/gp/product/B001HBXE18/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1

That's an overly simplistic point of view, not demonstrative of this situation at all. I am not new to any site but this one. You put the string "D50" in any website in the WORLD and I challenge you to find 5% of the participants who know what that means unless it was mentioned in detail in...