6EW7 Daystrom by RCA BIG BOTTLE used/70-80% 1960”s (4.5/32ma)

1 tube) 6EW7 Daystrom by RCA BIG BOTTLE used/70% 1960”s

1 triode section) 4.5ma Gm=1750 (80-85%) black plate

1 triode section) 32ma Gm=6250 (70-80%) gray plate

Tested on Amplitrex AT1000

Section 1 reference = 4-6ma and Gm=1700-2100

Section 2 reference = 45-50ma and Gm=7000-8000

(6EW7 is a close substitute to the 6DE7)

– Woo Audio 6
– Woo Audio 6 SE

RCA made skinny bottle 6EW7
Sylvania made FAT BOTTLE 6EW7