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RE: Tungsol 6550 - two dark plates or a black & a grey one ?

Posted by highfell on September 28, 2014 at 09:24:59:
You have a wonderful collection there. It puts my paltry few tubes into perspective -:)

If you look at Natubes, their ordering of the history of Tung-sol 6550s is as follows :

6550 Version 1 - TUNG-SOL (Original from Tung-Sol)
Solid black plates with Triple O-Getter (one on top and dual on one side).

6550 Version 2 - TUNG-SOL (Original from Tung-Sol)
Solid black plates with Single top Getter. Second version from Tung-Sol.

6550 Version 3 - Tung-Sol
Solid gray plate, no hole version with Triple O-Getter (one on top and two on each side).

6550 Version 4 - TUNG-SOL
Three holes on gray plate with Triple O-Getter. Last version from Tung-Sol ever made.

Today, I cranked up the volume for the first time, listening to MOFI's A night at the Opera by Queen. Wow, I really could't believe how good it sounded. Maybe the tubes are loosening up. Queen's music is pretty complex with lots going on whether it's guitar, piano, the chorus or Mercury's vocals - it all sounds so immediate, natural & like they were playing in the room!
Literally unbelievable.

Michael - do you have an opinion on whether I have two blacks or a black & a grey? Without having seen a grey one before, I can't be sure.