Your Svetlana 6550C could be a Sovtek, if two years old or less, it almost certainly is.
In that case, swapping for Wing C 6550 or KT88 are both better sound in my opinion. Wing C is the tube that was called "Svetlana" three years ago.
The trademark name was lost somehow and causes confusion when discussing this topic.
In that case, swapping for Wing C 6550 or KT88 are both better sound in my opinion. Wing C is the tube that was called "Svetlana" three years ago.
The trademark name was lost somehow and causes confusion when discussing this topic.