(!) (Single) 5963=12AU7 GE NOS 1960's (11.6/11.8ma)
(!!) (Best Pair) 5963=12AU7 Sylvania NOS 1960's (10.6/11.4ma and 11.2/10.6ma)
(!!) (Single) 5963=12AU7 GE NOS 1981 (9.4/11.4ma)
(!!) (BEST GE Pair) 5963 GE branded RCA NOS ribbed plates 1978-1979 (12/12.8ma and 12/12.8ma) 1-2% matched
(!!) (Best Single) USN-CHS-5963=12AU7 Sylvania NOS "D" getter 1959 (10.6/11.8ma)
(!!) (Recommended Single) 5963 RCA Hewlett Packard gray plates tests like new 1961 (10.8/11.0ma) 1-2% section balance
(!!) (Slightly Microphonic) 5963 RCA black ribbed plates" and D getter halo NOS 1957 (12.2/12.2ma) (12AU7 SUB)
(!!) (Slightly microphonic) 5963 RCA black ribbed plates" and D getter NOS 1957 (11.6/12ma) (High mA and Gm) (12AU7 SUB)
(!!) 5963 Beckman by RCA gray plates used/test like new 1961 (9.8/10ma) 1-2% section balance
(!!) 5963=12AU7 RCA NOS 1963 (9.2/9.6ma)
5963 RCA Hewlett Packard gray plates used/good 1960 (8.0/9.2ma)
(!!) (Recommended Pair) 5963=12AU7 Beckman by RCA gray plates used/test like new 1960-1962 (9.3/10.0ma and 9.4/9.6ma)
(!!) (Good Value Single 1959) 12AU7 Sylvania NOS "D" getter 1959 (8.5/8.0ma)
(!!!!) (Recommended Pair) 5963 GE NOS ribbed plates 1981 (10.2/9.8ma and 9.8/9.8ma) 1-2% matched
(!!!!) (Best Pair) 5963 GE NOS ribbed plates 1981 (10.6/11.2ma and 10.6/10.8ma) 1-3% matched
(!!) (Best Pair) 5963=12AU7 Sylvania NOS 1960's (12.0/11.2ma and 12.4/11.0ma)
(!!) (Best Pair) 5963=12AU7 Sylvania NOS 1960's (10.2/9.6ma and 10.2/9.6ma) 1% matched
(!!!) (Best Pair) 5963=12AU7 Sylvania NOS 1960's (10.6/11.4ma and 10.8/10.6ma) (close Gm)
