(!!!) (Best 6112 Pair) 6112 Philips JAN 1980's (.7/.7ma and .7/.8ma) 1-2% matched (Audio Note, Musical Fidelity)
(!!) (Best Pair) 12DT8 RCA gray plates NOS 1970's (11/12.2ma and 11/12.6ma)
(!!) (Recommended Pair) 6112 Philips JAN 1980's (.6/.8ma and .7/.7ma) (Audio Note, Musical Fidelity)
(!) (sold out) 8416 Amperex PQ USA NOS 1965-1967
12AE7 NOS (3 in stock)
12AH7GT US Brands NOS (8 in stock)
12DT8 RCA black plates NOS 1970 (23.0/24.4ma) (highest Ma and Gm)
12DT8 RCA gray plates NOS 1970's (12.2/16.4ma)
12DT8 RCA gray plates NOS 1970's (12.6/14.0ma)
12FQ7
12SC7 International Canada NOS, probably made by GE (2.0/2.1ma)
12SC7 International Canada NOS, probably made by GE (2.3/2.8ma)
12SC7 Ken Rad NOS 1940's (3 in stock)
12SC7 Philco NOS 1940's (1.8/1.8ma) 1% section balance
12SC7 Philco NOS 1940's (1.8/2.1ma)
12SC7 Sylvania NOS 1940's (5 in stock)
1633 RCA coated glass NOS 1940's
1635 RCA coated glass NOS 1950-1953 (2 in stock)
1635 RCA NOS (6 in stock)
6AU7 Sylvania branded International NOS (1 in stock)