1 low noise tube) E188CC=7308 Telefunken West Germany <> bottom gold pins used/good 1969 era – fair printing

1 section) 13.2ma Gm=10,800

1 section) 14.8ma Gm=11,500

7308=Premium low noise 6922

I use 1 pair in a Modwright ph 9.0x phono preamp

Tested on Amplitrex

Vplate=90V

Vgrid=-1.2V

Good Ma range 12-15ma

Good Gm range 11,000 – 13,000

Recommended for

– Cary Audio HH-1 hybrid headamp
– Conrad Johnson ET5
– Cavalli Liquid Glass
– Audion Black Shadows 2011
– Rode NTK1 mic
– RODE K2 mic
– EAR
– LAMM LL2
– LAMM M1.2 mono amps
– Manley Steelhead
– Audio Note
– Audible Illusions L1
– Audio Research