(!!!!!) (Best Overall Pair) ECC803S=12AX7 Telefunken Ulm Germany <> bottom NOS 1961 (1.4/1.7ma and 1.4/1.7ma) 1-2% matched (Nagra, Lamm, VTL, Aesthetix, Diva)
(!!!!) (Best Overall Single) ECC803S=12AX7 Telefunken Ulm Germany <> bottom NOS 1961 1% section balance (Gm=1800/1800) (1.5/1.5ma)
(!!!!!) (2nd Best Pair) ECC803S=12AX7 Telefunken Ulm Germany <> bottom NOS 1961 (1.2/1.3ma and 1.2/1.4ma) 1-2% matched (Nagra, Lamm, VTL, Aesthetix, Diva)
ECC803S Telefunken audio tubes
