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Tube Database (7,341 tube types · 1,270 archive entries)

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Tube-number record

GT4H

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ClassGas Triode
Filament4 V @ 2.4 mA

Construction

Primary TypeTriode
Sections1

Filament / Heater

Warm-up Time15s
Heater NotesHeating time: 15 seconds

Absolute Maximum Ratings

Audio Performance

Key Features
  • Identical characteristics to the EC50 except for heater ratings

Application Notes

This valve has identical characteristics to the EC50 (q.v.) except for heater voltage (4.0V) and current (2.4A).

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