(!!!) (BEST PAIR) 6LF6 Sylvania NOS 1970's short bottle (103ma and 99ma) (close Gm) (Counterpoint OTL, Futterman OTL, Prodigy OTL)
(!!!) (recommended Pair) 6LF6 Sylvania and Sylvania International NOS 1970 era (92ma and 97ma)
(!!) (Recommended Pair) 6LF6 JAPAN Big Bottle Euro style construction NOS 1970's (92ma and 87ma)
(!) (BEST SINGLE) 6LF6 RCA JAPAN branded Gt. Britain Big Bottle Euro style construction NOS 1973 (133ma)
6LF6 GE branded Westinghouse NOS 1981 (158ma)
6LF6 GE Lindal NOS 1960's (102ma)
6LF6 GE Lindal NOS 1960's (89ma)
6LF6 GE Zenith NOS 1978 (155ma) (Counterpoint OTL, Futterman OTL, Prodigy OTL)
6LF6 RCA JAPAN branded Gt. Britain Big Bottle Euro style construction low hours/like new 1976 (104ma)
6LF6 RCA JAPAN branded Gt. Britain Big Bottle Euro style construction NOS 1970's (80ma)
6LF6 Sylvania branded Zenith NOS 1964 (115ma) (Counterpoint OTL, Futterman OTL, Prodigy OTL)
6LF6 Sylvania NOS 1970 era (98ma) (Counterpoint OTL, Futterman OTL, Prodigy OTL)
6LF6 Zenith NOS 1978 (101ma) (Counterpoint OTL, Futterman OTL, Prodigy OTL)
6LX6=6LF6 GE branded Westinghouse NOS (82ma)
6LX6=6LF6 Sylvania Philips NOS (91ma)
