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6SH7 metal used (4 in stock)
6SH7 RCA metal can NOS (10.3ma)
6SH7 RCA metal can NOS 1955 (10.2ma)
6SH7GT Raytheon NOS 1940's (9.5ma)
6SJ7 US Brands used/good (40 in stock)
6SJ7 GE used/like new 1966 (3.3ma)
6SJ7 RCA metal can like new 1964 (3.5ma)
6SK7 FM Co. by GE used/good 1951 (9.6ma)
6SK7 GE metal NOS 1977 in Sylvania box (8.2ma)
6SK7 Sylvania NOS 1951 (8.8ma)
6SK7 Ken Rad NOS 1943 (9.6ma)
6SK7GT Sylvania used/good 1940's (7.3ma)
6SK7GT Raytheon used/good/70% 1940's (6.6ma)
6SL7GT Brimar NOS black base black plates 1950's (2.2/2.4ma) (slightly microphonic)
(!!) (Best Single) 6SL7GT GE short round chrome plates NOS 1970's (2.9/2.9ma) 1-2% section balance (Highest mA and Gm)
(!!) 6SL7GT Sylvania NOS branded Westinghouse tall bottle 1955 (2.8/2.7ma)
6SN7GTA CBS NOS Black Ribbed Plates similar to RCA early 1950's (8.3/8.6ma)
6SN7GTB CBS black base black plates side-getter, the same shape as Sylvania 6SN7GTB used/good 1961 (7.5/8.0ma)
(!!) (Recommended) 6SN7GTB Raytheon gray plates low hours/like new 1960's (9/10ma)
6SN7GTB RCA used good 1960's (6.4/8.2ma)
