6N7 Sylvania NOS 1940”s (2.3/2.3ma)

6N7 Sylvania NOS 1940”s

2.3ma Gm=1300

2.3ma Gm=1300

(6N7=6A6=ECC31, 6N7=Type 53 with different filament voltage, also see 5694)
(the best sounding 6N7 type ever made is the ECC31 Mullard)

– Sun Audio SV-6V6SE 2008