Best modern 6550 tube for ARC per-amp


There are a lot of modern 6550 tube in the market such as Reissue Tung-Sol 6550,  GE-6550A (Green letter), Svetlana 6550, Russia Gold Lion 6550/KT88........etc.  What is the best modern 6550 tube for ARC per-amp in your opinion?  (PS: GE 6550A is not newly made but still a lot in the market).

I used to own a NOS black plate 3 holes Tung-Sol 6550 but which has leak and now I’m using the stock Svetlana 6550. I want to buy a nice sound 6550 for my ARC Ref 6 and my stock Svetlana 6550 will be used as spare. Will not consider NOS black -plate Tung-Sol again because of pricy and not sure the condition.


mmbl622

Showing 1 response by musicmann1

There have been man anecdotal posts over the years regarding tube rolling in ARC Preamp’s, and the 6550 in their power supply definitely changes the sound....and I can “parrot“....ah I mean 
confirm, (😊) , this in my observation as well in my REF 6 SE......
Cheers....