Tubes - Top hats, and Tube socks


Tubes - Top hats, and Tube socks, Do either of these work? Is one better than the other? This is for a preamp(6DJ8) application. Where can they be purchased?
miketw
Top hats are very effective, but that does not mean it will sound better. In preamp tubes a smidge of microphony can lead to a sense of "air" and with dampers the midband can harden up. So try it both ways as every tube and every situation is different. Don't assume anything. We go naked here.
Thanks for the input. Are there multiple types of top hats or only one for each tube size/type?
Miketw-only one size for all the small tube types. Kevin Deal is right--that's the leanness I mentioned. See if they offer a money back guarantee.