(!!!!) (BEST GE PAIR #2) 5687WB GE NOS rebranded CK-5687WB Raytheon black plates with hint of bronze 1970's (Audio Note, Manley, Modwright, Audion) (36.8/37.4ma and 36.6/35.8ma)1 low noise pair) 5687WB GE NOS rebranded CK 5687WB Raytheon black plates with hint of bronze 1970's 1 tube) 36. 8 37. 4ma Gm=11,150 11,250 1 tube) 36. 6 35. 8ma Gm=10,750 10,900 Matched on Amplitrex Good Ma range 30 35ma (tubes etched 5687WB) 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 preamp Manley Marsh Ray Samuels Raptor and B52 Aria VW5XL Modwright Sony DVP999ES