The 6N7S double triode was designed for amplification of low-frequency power. Tubes were manufactured by Novosibirsk plant. Equivalents to the 6N7GT.

Key specifications:

Original name: 6N7S;

Analog: 6N7GT;

Type: Double triode;

Application: LF power amplification;

Cathode type: oxide, indirect heating;

Envelope: glass, miniature;

Filament voltage: 6.3V;

Anode voltage: 300V;

Filament current: 0.76-0.86A;

Anode current: 0.0045-0.009A;

Anode power: 6W;

Grid voltage: -6V;

Differential transconductance: 2.7-3.7mA/V;

Microphonic noise: 400mV;

Gain: 30.0-40.0;

Mass: about 50g.