power tube for ref 5se

Good stuff,thanks,Ive got one.I currently prefer a nos GE 6550a.
I cant go back to the sovtec,so well see what else is happening,cheers.Tung sol black plate mite be worth a try

I use the Tungsol 6550 Blackplate , same as in the CD REF 7.
Up until now there is none better .Fortunately I have bought spare blackplates for both units

Good good Hansk46,I try them in the new year.thanks

is there a place where I can buy Tungsol 6550 Blackplate ?

Hello Veerapaneni,
it seems they are sold out ,I bought mine at Ebay two years ago , they were not NOS , but measured fair enough.At tubeworld.com I just saw some black plates ( used ), very very expensive ,another option is the gary smooth plate