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> Lot of two GM70 tubes gm 70 graphite audio
Lot of two GM70 tubes gm 70 graphite audio
GM70 TWO TUBES GM 70 Graphite AUDIO TUBES NOS
* cathode emission current 800mA (plate voltage and grid potential = 180V);
* long-dissipated anode power 125W;
* differential transconductance 6mA/V (plate voltage = 600V and plate currents = 160mA, 260mA);
* gain 6.7 (plate voltages = 1200V, 1000V and plate current = 125mA);
* dielectric resistance 20 megaohm;
* reverse grid current 40 microamp;
* max long-dissipated anode power 125W;
* max minute-dissipated anode power 150W.
