(!!!!) (BEST GE PAIR #3) 5687WB GE NOS rebranded CK-5687WB Raytheon black plates 1970's (Audio Note, Manley, Modwright) (35.8/37.5ma and 34.6/36.2ma)1 low noise pair) 5687WB GE NOS rebranded CK 5687WB Raytheon black plates 1970's 1 tube) 35. 8 37. 5ma Gm=11,100 11,400 1 tube) 34. 6 36. 2ma Gm=11,400 11,600 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 Audion 845 Black Shadow