(!!!) (Best Holland Single) ECC85 Philips Miniwatt Holland Kuhl-Tube cryo NOS 1962 (9.4/11.4ma)
(!!!) (Recommended Single) ECC85=6AQ8 Philips Holland NOS 1970's (13.5/14.4ma)
(!!) (Good Value Pair) ECC85=6AQ8 RCA Japan by Hitachi 1970's (10/15ma and 10.4/14.4ma)
(!!) (Best Siemens Single) ECC85=6AQ8 RCA made by Siemens Germany NOS 1969 (16.0/15.2ma)
(!!) (Recommended Single) ECC85 Siemens Germany NOS rebranded RCA 1966 (10.3/11.8ma)
(!!!) (Best Single) ECC85 Siemens Germany NOS rebranded RCA 1967 (12/12ma) 1% section balance
(!!!) (Recommended Pair) ECC85=6AQ8 RCA Heerlen Holland NOS 1968 (21/16.5ma and 18.5/15.5ma) (close Gm)
(!!!) (Recommended Single) ECC85=6AQ8 Philips Holland NOS 1970's (11.6/14.2ma)
(!!!) (Best Value Single) ECC85=6AQ8 Philips Holland NOS 1975 (10/17ma)