Hmm that's good to know!
I'm looking for a REALLY transparent tube, Ideally I want an Expansive Sound Stage with as much detail as I can get an percision. I really prefer "solid state" but I like the touch of warmth the JJ EC 88 adds into my Starlight, I liked the Sound of the 6N6P but not the... lack of sound stage it brought :/
I tried a Clear Top as well an it was... to bright :/ the bottom end was really weak an I wasn't really thrilled
i've had very nice results with teslas before, and much cheaper than telefunken , something like this
http://www.ebay.com/itm/Tesla-RFT-NOS-NIB-12au7-ECC82-tube-Test-NOS-/171019431290?hash=item27d18d6d7a:g:ZC8AAMXQt5ZRXoYI