(!!!!!) (Best Sylvania Pair) 6DJ8 Sylvania NOS 1960's (15.2/21ma and 15/18.5ma) (good detail and smooth)
(!!!!) (Best Overall Single) 6DJ8=ECC88 Philips by Sylvania NOS 1987 (15.0/15.2ma) 1-2% section balance
(!!!!) (Best Overall Single) 6DJ8=ECC88 Philips by Sylvania NOS 1987 (20/23.6ma) (highest mA and Gm)
(!!!!) (Best Pair) 6DJ8 Philips ECG USA by Sylvania NOS 1987 (16.8/17.8ma and 16.8/18ma) 1-2% matched
(!!!!) (Best Pair) 6DJ8 Philips ECG USA by Sylvania NOS 1987 (17.2/20.6ma and 17.0/21ma) 1-3% matched
(!!!!) (Best Value Pair) 6DJ8 Philips ECG USA by Sylvania NOS 1987 (12.8/18.2ma and 13.0/18.4ma)
(!!!!) (Best Value Pair) 6L6WGB=5881 Sylvania NOS and like new same build 1970's (74ma and 75ma)
(!!!!) (Good Value Pair) 6L6WGB=5881 Sylvania and Philips JAN black base 1979-1986 (72ma and 73.4ma)
(!!!!) (Recommended Pair) 6DJ8 Philips ECG USA by Sylvania NOS 1987 (13.5/18.5ma and 13.5/19.0ma) 1-3% matched
(!!!!) (Recommended Pair) 6L6WGB=5881 Sylvania NOS same build 1980 era (81ma and 84ma) (same Gm)
(!!!!) (Single) 6DJ8=ECC88 Sylvania JAN NOS 1972 (16.5/19.8ma)
(!!!!) 6DJ8=ECC88 Philips by Sylvania NOS 1987 mismatched sections (9.6/16ma)
(!!!) (Best Pair) 6DJ8 Philips ECG USA by Sylvania NOS 1987 (18/20ma and 16.5/18.5ma)
(!!) (Good Value Single) JAN-5751 GE double mica gray plates NOS 1987 (2.9/3.1ma)
(!!) (Good Value) JAN-5751 GE double mica gray plates NOS 1987 (2.3/2.3ma) 1-2% section balance
6528A Cetron used/good 1987 (112/113mA)
