(!!!!) 6DJ8=ECC88 Philips by Sylvania NOS 1987 mismatched sections (9.6/16ma)
(!!!) (Best Single) JHS-5670 Sylvania NOS 1966 (12/10ma)
(!!!) (Recommended Pair) 6005W Sylvania JAN black plate clear glass NOS 1971 (45.8ma and 46.6ma)
(!!!) (Recommended Pair) 6005W Sylvania JAN black plate clear glass NOS 1971-1972 (41ma and 41.2ma) 1% matched
(!!!) (Recommended Pair) 6AQ5A Sylvania black plate NOS 1970's (50.5ma and 52ma)
(!!!) (Single) JHS-5670 Sylvania NOS 1966 (7.0/6.8ma)
(!!!) 12AX7 BRIMAR England BVA ribbed plates used/good 1960's (0.8/1.0ma and Gm=1400/1500)
(!!!) 12AX7 BRIMAR England BVA ribbed plates used/good 1960's (0.9/1.1ma and Gm=1350/1500)
(!!!) 6GM8=ECC86 Amperex Holland NOS 1975 faded printing (4.0/4.5ma)
(!!) CV4024=12AT7WA Brimar NOS square black plates 1975 (9.6/14.4ma)
(!!) EL34 Mullard Philips UK used/strong 1975 (106.5ma)
(!) (Best Single) 407A Western Electric NOS 1962 (44/26 and 49/26)
(Read Review) 6DJ8=ECC88 Philips Miniwatt Holland NOS 1960-1963 (16.6/17.0ma and 15.8/16.6ma) 1-5% matched
407B Western Electric like new 1968 (45/26 and 46/26)
6CA7=EL34 Siemens Germany skinny bottle branded CEI NOS 1975 (79ma)
6CA7=EL34 Siemens Germany skinny bottle branded CEI NOS 1975 (85ma)
6FC7=ECC89 Mullard branded Philips NOS 1975 (sold out)