School me on 6550's. NOS and current.

[michael.e]

I have a GT Soul-O 150. I found that I really like the sound and feel of these tubes for this particular amp. I am currently using some EH branded tubes. What else is out there?

 

[Trotter]

I asked pretty much the same question a few weeks back. Here's the feedback I got if you're interested:

https://www.thegearpage.net/board/index.php?threads/1369954

 

[amphog]

JJ has been recommended by a couple of techs, they are the most consistent right now. They will also hold up in SVT's.