GENALEX GOLD LION Tube 12AT7 / ECC81 / B739 Gold Pins (Unit)

Specifications
Product type	Custom tube
Compatibility	12AT7 ECC81 B739
Grid reverse current	Not more than 0.5µA @ Heater voltage = 6.3V or 12.6V, Plate voltage = 250V, Grid voltage = -2V, Grid circuit resistance = 0.25M Ohm
Heater current	Not less than 330mA @ Plate voltage = 6.3V Not less than 165mA @ Heater voltage = 12.6V Not more than 360mA @ Plate voltage = 6.3V Not more than 180mA @ Heater voltage = 12.6V
Current plate	Not less than 7mA @ Heater voltage = 6.3V or 12.6V, Plate voltage = 250V, Grid voltage = -2V Not more than 13mA @ Heater voltage = 6.3V or 12.6V, Plate voltage = 250V, Grid voltage = -2V
Plate current at the beginning of the curve	Not more than 10µA @ Heater voltage = 6.3V or 12.6V, Plate voltage = 250V, Grid voltage = -12V
Transconductance	Not less than 4.5mA/V @ Heater voltage = 6.3V or 12.6V, Plate voltage = 250V, Grid voltage = -2V
Amplification factor	Not less than 50 @ Heater voltage = 6.3V or 12.6V, Plate voltage = 250V, Grid voltage = -2V

Specifications

Product type

Custom tube

Compatibility

12AT7
ECC81
B739

Grid reverse current

Not more than 0.5µA @ Heater voltage = 6.3V or 12.6V, Plate voltage = 250V, Grid voltage = -2V, Grid circuit resistance = 0.25M Ohm

Heater current

Not less than 330mA @ Plate voltage = 6.3V
Not less than 165mA @ Heater voltage = 12.6V
Not more than 360mA @ Plate voltage = 6.3V
Not more than 180mA @ Heater voltage = 12.6V

Current plate

Not less than 7mA @ Heater voltage = 6.3V or 12.6V, Plate voltage = 250V, Grid voltage = -2V
Not more than 13mA @ Heater voltage = 6.3V or 12.6V, Plate voltage = 250V, Grid voltage = -2V

Plate current at the beginning of the curve

Not more than 10µA @ Heater voltage = 6.3V or 12.6V, Plate voltage = 250V, Grid voltage = -12V

Transconductance

Not less than 4.5mA/V @ Heater voltage = 6.3V or 12.6V, Plate voltage = 250V, Grid voltage = -2V

Amplification factor

Not less than 50 @ Heater voltage = 6.3V or 12.6V, Plate voltage = 250V, Grid voltage = -2V

Limit values
Heater voltage	Not less than 6V or 12V Not more than 6.6V or 13.2V
Plate voltage	Not more than 330V
Cathode to heater voltage	Positive : Not more than 200V Negative : Not more than 200V
Plate current	Not more than 18mA
Plate dissipation power of each triode	Not more than 3.25W
Each triode grid circuit resistance	Fixed bias : Not more than 0.25M Ohm Automatic bias : Not more than 1M Ohm
Max grid reverse current	Not more than 55V

Limit values

Heater voltage

Not less than 6V or 12V
Not more than 6.6V or 13.2V

Plate voltage

Not more than 330V

Cathode to heater voltage

Positive : Not more than 200V
Negative : Not more than 200V

Plate current

Not more than 18mA

Plate dissipation power of each triode

Not more than 3.25W

Each triode grid circuit resistance

Fixed bias : Not more than 0.25M Ohm
Automatic bias : Not more than 1M Ohm

Max grid reverse current

Not more than 55V

Interelectrode capacitances
Input capacitance of each triode	2.5pF
Output capacitance of each triode	0.4pF
Transfer capacitance of each triode	1.6pF

Interelectrode capacitances

Input capacitance of each triode

2.5pF

Output capacitance of each triode

0.4pF

Transfer capacitance of each triode

1.6pF

Contacts number	N/A
Tube type	Dual Triode

une tuerie
J'ai attendu deux mois avant d'écrire un avis ,franchement c'est terrible ,ça vaut le coup

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This review has been posted for GENALEX GOLD LION Tube 12AT7 / ECC81 / B739 Gold Pins (Unit)

GENALEX GOLD LION Tube 12AT7 / ECC81 / B739 Gold Pins (Unité)
Changement des deux lampes JJ électronique de mon ampli advance paris A 10 par deux GENALEX GOLD LION CC81,des lampes de très bonnes qualités,un son doux , profond,et très détaillé,des basses très agréables,des lampes de préampli audio excellentes!!!

(1)

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This review has been posted for GENALEX GOLD LION Tube 12AT7 / ECC81 / B739 Gold Pins (Unit)

Parfait
Acheté pour remplacer les Telefunken de mon DAC Scala. Je ne sais pas si c'est parce que ces derniers étaient usés ou parce que c'était leur signature, mais les Genalex ont eu un effet spectaculaire. Tout se raffermit, tout s'agrandit. J'ai également été surpris en bien, alors que je lisais qu'ils étaient euphoniques, de les trouver plutôt neutres (ou alors, c'est que j'appelle une coloration de la neutralité, mais je ne pense pas :). Rien d'exagéré, pas d'effet de loupe. Si vous cherchez ce que l'on appelle à tort du "son tube", passez votre chemin. Si vous cherchez un bon tube, allez-y.

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This review has been posted for GENALEX GOLD LION Tube 12AT7 / ECC81 / B739 Gold Pins (Unit)

Belle amélioration
Il remplace avantageusement une EH qui équipait mon ampli casque Canor tp10: aigu plus suave, médium plus souple et champ sonore mieux ressenti avec mon Grado PS500E.

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This review has been posted for GENALEX GOLD LION Tube 12AT7 / ECC81 / B739 Gold Pins (Unit)