(!!!!!) (2nd Best Single 1958) 12AX7=ECC83 Mullard UK "long plates" NOS 1958 (1.3/1.4ma) (f91 series)

1 low noise pair) 12AX7=ECC83 Mullard UK "long ribbed plates" NOS "O" getter halo (f91-B8C=1958) very good printing in Mullard box - small piece of mica wedged between bottom mica and glass - see photo 1 section) 1.3ma Gm=1500 1 section) 1.4ma Gm=1500    NOS Gm range 1500-1600+ NOS mA range 1.0mA+   Recommended for - Victoria - Bogner Ecstasy - Bad Cat - Sur SL-68 (hand wired) - Fender - Two Rock - Top Hat King Royale - Soldano SLO-100 (Mark Knopfler, Eric Clapton) - Marshall 1959HW Plexi - Marshall JVM-210H 2007-2008 - Diezel Herbert head - Gibson GA-6 1957 - Trace Elliot C30 - Mesa Boogie Triaxis 2 preamp- Mesa Boogie Mark 2C+ 1984- Goodsell Super 17 M.K. 2 head- Jolida CD player- Landgraff Custom 50W- Lexicon Signature 284