6N7GT RCA used/good 1940”s (2.4/2.3ma)

6N7GT RCA used/good 1940”s

2.4ma Gm=1200

2.3ma Gm=1100

(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