Cary SLP98L Tube Rolling

In my system it was well worth the time and expense. As I said in a previous post, the Cary is most likely voiced to the Chinese 6SN7s, so they won't sound horrible, but in my system when I swapped in excellent NOS 6SN7s it was clear to me that there was more than a minimal difference.

There is only one way to find out. Give it a shot and hear for yourself.

As for using Raytheon-VT 231s in the Cary, which type is more preferable : flat plates or t-plates?

Well worth tube rolling, and the "F1" version (direct coupled with oil caps) is definitely the way to go. A true giant slayer at reasonable cost.