TP-027, Jerry Garcia / David Grisman wins a Writer's Choice Award from Myles Astor of Positive Feedback Online
We were fine tuning the Repros that we will have at CES, and I suggested that we use an old trick I learned from Buddha many years ago. Take a Q-tip and cut it in half. Chuck one half up in a Dremel (small mandrel) and use a little metal polish to polish the pins of your Repro or Eros tubes. You may not see a huge difference in the appearance of the pins, but you will probably see a fair amount of black tarnish on the Q tip. Then treat the tube pins and the sockets with a little Pro Gold. We heard a very worthwhile reduction of the noise floor doing this on two different Repros.
any other tube circuit that deals with very small signals