(!) (Single) 5963=12AU7 GE NOS 1960's (11.6/11.8ma)
(!!) (Single) 5963=12AU7 GE NOS 1981 (9.4/11.4ma)
(!!) (Best Single) USN-CHS-5963=12AU7 Sylvania NOS "D" getter 1959 (10.6/11.8ma)
5963 RCA black ribbed plates" and D getter halo NOS 1957 (sold out - read review)
(!!) 5963=12AU7 RCA NOS 1963 (9.2/9.6ma)
(!!) (SINGLE) 5963=12AU7 RCA NOS 1965 (10.8/13.2ma)
5963 RCA Hewlett Packard gray plates used/good 1960 (8.0/9.2ma)
(!!!!) (Best Pair #2) 5963 RCA and RCA Beckman NOS ribbed plates 1960-1965 (9.4/9.2ma and 9.4/9.4ma) 1-2% matched (Same Gm)
(!!!!) (BEST Pair) 5963=12AU7 RCA NOS ribbed plates 1965-1973 (12.4/12.6ma and 11.4/11.6ma) (Highest mA and Gm)
(!!) (BEST GE Pair) 5963=12AU7 GE branded RCA NOS ribbed plates 1978 (13.0/11.4ma and 12.6/11.4ma)
(!!!) (Recommended Pair) 5963 gray plates NOS 1967-1973 (9.4/9.09ma and 8.4/9.0ma)
