(!!!!!) (Best Overall Single) CK-5687WB Raytheon black plates NOS 1960”s (40.5ma/42ma) (Audio Note, Modwright, Manley) Highest mA and Gm Title: 5687WB Raytheon

1 low noise tube) CK-5687WB Raytheon black plates NOS 1960”s

1 section) 40.5ma Gm=12,400

1 section) 42.0ma Gm=12,700

Tested on Amplitrex

Vplate=120V

Vgrid=-2V

Good Ma range 28-35ma

Good Gm range = 10K-12K

7119 is best sub for a 5687 and visa versa

– Modwright preamp
– Audio Note DAC 4
– Audio Note Jinro amp
– Audio Note L3
– Audio Note M3, M7 preamp
– Manley
– Ray Samuels Raptor and B52
– Aria VW5XL
– Modwright Sony DVP999ES
– Audion 845 Black Shadow
– Bottlehed Smack