• Type: Beam Tetrode
• Heater Voltage (Uf): 6.3 V
• Heater Current (If): 2.5 A
• Maximum Plate Voltage (Ua): 800 V
• Maximum Plate Dissipation (Pa): 42 W
• Transconductance (S): 11 mA/V
• Base: Octal (8-pin)

The EL509S is suitable for:

• Audio Amplifiers: Particularly in high-fidelity and guitar amplifiers, where a powerful output stage is desired.
• Industrial Equipment: Such as RF transmitters and modulators.

Considerations

• Biasing: Proper biasing is crucial to ensure optimal performance and longevity.
• Socket Compatibility: Ensure that the amplifier's socket and circuit are compatible with the EL509S's electrical characteristics.