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(!!!!) (Best RCA Pair) VT-229=6SL7GT RCA round black plates NOS 1942 (2.8/2.9ma and 2.5/2.6ma)
(!!!!) (Best Single 1944) 6SL7GT Sylvania round black plates NOS 1944 (same build as VT-229) (2.1/2.3ma)
(!!!) (Best Pair) 1625 National Union NOS 1944 (90/40 x 2 tubes)
(!!!) (BEST PAIR) JAN-CYS-1616=1616 Sperti, Inc. NOS made by RCA 1944 (Space Tech Labs power supply STR-104)
(!!!) (Recommended Pair) JAN-CKR-6SJ7 Ken Rad metal can NOS 1944 (2.4ma and 2.4ma) 1-2% matched
(!!!) (Recommended Pair) JAN-CKR-6SJ7 Ken Rad metal can NOS 1944 (3.2ma and 2.8ma) (same Gm)
(!!) (2nd Best Pair) 6K6GT RCA NOS coated glass 1949 (38ma and 40ma)
284D Amperex brass base low emission display tube 1940 era
