HIFI audio WE845+ tube replacement 845 A845 E-845 845-DG 845-TII 845-T 845-TA tube amplifier kit DIY(2pcs Matched Pair)

PreampsFilament HeatingVoltage ----------------------------------------10VIf ---------------------------------------- 3.25 AExtreme RatingAnode voltage----------------------------------1250VAnode power dissipation-----------------------------75 WMaximum signal output power-----------------------------150 WMaximum anode current---------------------------------120 mA;Interelectrode capacitanceInput capacitance ----------------------------------6 PFOutput Capacitor ----------------------------------4.5 PFCross-circuit capacitance---------------------------------14.5 PFStatic parametersUa----------------------------------------1250V-Ug------------------------------------------------ -200VIa------------------------------------------------80 mAGm--------------------------------------3 mA/VLi----------------------------------------------------1.7 KYou----------------------------------------------------------------5RL---------------------------------------------3.4 KUg(pk)--------------------------------69 VPout----------------------------------------------------15 WRecommended working status (reference value)Monocular A1 zoom:Voltage source ----- 1000 1000 1250 volts-Ug--- 145 155 209VRL-----6 9 16 KCurrent value------90 65 52 mATransconductance -----3.1 - - mA/VPeak voltage --- 110 148 VLi------1.7 1.9 2.1 thousandPout----24 21 24 WPush-pull AB1-level zoom:Ua----------------- 800 1000 1000 1250 V-Ug---------------- 125 170 175 225 voltsHysteresis------------------ 4.5 4.6 4.6 6.6 OpenIa--------------------------------80 70 40 40 mAUg(pk)----------------177 240 - - VIa (mAx.sig)---------170 230 230 240 mA40 75 75 115 W

• Preamps