Primaluna and Rogue

Donjr - the names should be on the glass - brands such as JJ, EH (electron harmonis) , sovtek are new production, those like RCA, Sylvania, Telefunken are NOS - Mullards and Tungsols can be either - here's a couple of links - TubeDepot sells both - new & NOS , Brent jesse sells NOS -PS I'm not affiliated with either just a customer of both - If it doesn't have NOS you can get them without spending a fortune and get a big difference to my ears - likewise you can spend a lot on NOS if you have the bucks

http://tubedepot.com/12ax7.html

http://tubedepot.com/12au7.html

http://www.audiotubes.com/12ax7.htm

http://www.audiotubes.com/12au7.htm

Found a great combo of 12ax/au7s.The Mazda 12au7 french military labeled "Cifte" (Quest for Sound) and the Shuguang triple-mica G8/9 12ax7s (probably available thru E-Bay).If you can't find the Shu s,give me a shout.I believe that I might have access to a pair.

Sounds great. I'll post back here after I receive the unit. Thanks for the information. I know nothing about tubes besides the fact that I enjoy the sound immensly. What are the 4 large tubes? I know some tubes last a long time and some don't. Which is which? When I tube roll, do I wear gloves? The owners manual I found on Rogue's website just labels the center as the preamp section. What's the other 2 - 12au7's and the two 12ax7's?

The big tubes are the power or output tubes. You do not want to touch those w/o letting them cool off or using gloves.

use gloves when handling any of the tubes , large or small
The Magnum should have the KT90 powertubes which with the larger power supply allows for the unit generate 90 wpc - these are tubes that get biased . The small tubes are all signal stage tubes