I've acquired various sets of 12xxx tubes here on Agon. Some sets are made up of different labeled tubes or from tubes worn off labels. The boxes have the tube brand/type and test readings. The problem is I have no recall/memory and will likely forget what tubes go to what boxes once I use the tubes in my gear. Furthermore I'm not familiar enough with tubes to identify Amperex, versus Mullard.... simply by looking at a tube. So, would it be possible to place a small, and I mean small, sticker on the tube and write a few codes for easy identification ex) A X7 would mean Amperex, 12AX7 ex) M U7 would mean Mullard, 12AU7
I want to ensure I do not compromise tube life. I'm thinking heat would not be an issue for 12 series tubes used in a preamp, cd player.
Use a Sharpie and a simple number code, perhaps 000-999. Then simply maintain a notebook with the full description of the tube with that number. Simple, easy, and gives you all the information you need or want...
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