6DJ8 vs. 6922?

Thanks a lot everyone. Lots of great info, and links to sources of even more. I have a box full of the small signal tubes I bought back in the 90’s, gotta look through it again. I know I have some 7308’s (Gold Aero iirc), 6922 Amperex’s I believe, and definitely some RAM’s.

The Music Reference RM-5 Mk.IV I just received (according to the serial number one of the last twenty of the 1,000 RM-5’s Roger made. Bone stock, no mods) is fitted with a 6922 Mullard in socket V3 (line stage), a pair of Sovtek (isn’t that the 6922 ARC uses?) in the phono stage.

I have a bassist/guitarist pal who has some old Telefunken’s, but he’s not interested in selling any. Selfish sob!

read this:

http://www.audiotubes.com/6dj8.htm


the first thing to read in learning about the 6DJ8 family is brent jessee's 6DJ8 page. 

someone else posted it. 

also, lots of people here are quick to offer misinformation. its often swift and immediate. its worse on facebook groups. 

READ THIS:

http://www.audiotubes.com/6dj8.htm

learning the 6DJ8 family begins with familiarizing yourself with this information here. its not entirely correct, but its the best out there. 

     Whatever, "misinformation" MIGHT be found: the OP asked if the mentioned tubes tubes are interchangeable (6DJ8/6922) and favorites.

     No iteration mentioned in this thread* IS NOT directly interchangeable, with those, in a circuit designed for a 6DJ8 or 6922.

                             +1 for Brent Jesse's observations.

                       A wealth of listening impressions/info, here:

https://www.head-fi.org/threads/6922-tube-review-17-top-6922-6n23p-e88cc-cca-7308-e188cc-tubes.761078/

                       *Outside of the 12 Volt tubes mentioned, obviously.

I’ve tried more tubes in this variant than I would care to mention. Oddly, favorites were the Amperex 6DJ8 with a white globe. I’ve never seen these anywhere else, and they sounded better than other Amperex 7308 (military spec) with white lettering that are $$$, despite the 6DJ8 spec supposedly being the lowest of 6DJ8/6922/7308. If you can find any Amperex 6DJ8 with a white globe on em, try it out. 

The Amperex JAN 7308 is white good as well, as is the Reflektor 6N23-P. The latter are still available on Viva Tubes, where I’ve purchased some in the past:

https://www.vivatubes.com/true-nos-nib-matched-pair-6n23p-ev-soviet-russia-6922-6dj8-mil-spec-vacuum-tubes/?gad=1&gclid=CjwKCAjwvJyjBhApEiwAWz2nLW99-7nP7mCqeHI5qaNO9Vg8Bh1LO1_4SJh4OZ29vft9PlZBAPwElRoCTFoQAvD_BwE

I went to NOS Amperex 6922’s and they are wonderful.  I tried several different ones and the Amperex were the best to my ears. 
 

All the best.