Do the VTL MB450's require matched tubes??


I am going to retube my VTL's and need 16--6550 tubes...do they need to be matched (pairs, quads...whatever)?
yesfan
they do not need to be match, you are going to do that when you bias them, svletana 6550s sound best, bias at about 27ma
I don't believe matching is an issue, since the tubes are individually biased. I have the Wing C in mine.
I got 16 SED Wing C's from Kevin Deal at Upscale Audio a few weeks ago. It would appear he has them in stock. Check out the NOS Sylvania 6350 for us VTL people.

Good Luck

Allan
No, you will beed to bia each tube even if they are matched. But you shoud be buying the best from Kevin at upscale audio
Disagree with leoinstereo...

If you bias unmatched tubes to the same grid current, the same grid current will not mean the same offset point on the tube's output characteristics another words for one tube it could be too much and for another is too little...