Keeping it real, I just rolled in a new tube and damn this is another killer one!
@TK16 I see you have this tube at the number 9 spot, and it ranks quite a bit higher for me. The Copenhagen ECC81 Angled D Getter 51' with bottom code TKB, has a freaking killer midrange. The tone, texture, timbre, and inner detail in the mids is stunningly lifelike, and the delicate touch of the notes is magic. I am hearing guitars and vocals as if they were in the room with me, and this tube has the "Thereness" factor in full affect. For acoustic music this tube is insanely good. Still burning it in, but so far it's all about the very involving mids with this tube and I am loving how it pairs with my ZMF's and their very involving mids. I have had this tube for a while now just sitting in storage, and after loosing my Lorenz ECC81 Foil D yesterday, I decided it was time to give it a go, as I like to have 3 driver tubes in rotation to keep things fresh. I have to say with what I am hearing so far, it has easily made the cut and will be put into rotation.

This tube is more of a specialist in that it is all about the very unique and involving midrange that is clear and natural sounding, and for acoustic music (especially guitar and vocals) this tube is fantastic and has some tube magic that only the older "top tier" tubes can produce.
Happy Friday my friends!