ELECTRO-HARMONIX GOLD 2A3 Power Tube Platinum Matched Gold Plated Grid (Matched Pair)

ELECTRO-HARMONIX GOLD 2A3 Power Tube Platinum Matched Gold Plated Grid (Matched Pair)
The high quality Electro-Harmonix 2A3 power tubes are tubes with direct triode heating by oxide cathode. They are ideal for a low frequency power amplifier in the amplifier output stage. The gold grid of these tubes provides exceptional polarization current stability.
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Reference : 13301
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165,83 €tax excl.

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Shipping date: 25-02-2020.

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Electro-Harmonix 2A3

Power Tube Platinum Matched Gold Plated Grid (Matched Pair)

Electro-Harmonix 2A3 Tube de Puissance Appairage Platinum Grille plaquée Or (Paire appairée)

The high quality Electro-Harmonix 2A3 power tubes are tubes with direct triode heating by oxide cathode. They are ideal for a low frequency power amplifier in the amplifier output stage. The gold grid of these tubes provides exceptional bias stability. At the base of the tube are 4 gold plated pins on ceramic support.

The two tubes are perfectly matched to obtain exactly the same current, maximizing their performance. The Electro-Harmonix "Platinum" pairing consists of a 24-hour burn-in period followed by a measurement in milliamps of the bias current to ensure the perfection of the pairing.

Technical characteristics

Specifications
Product typePower tube
Heater voltage (AC or DC)2.5V
Grid voltageUnder DC cathode power supply : -42V
Under AC cathode power supply : -45V
Grid effective voltage30V
Plate load resistance2.5 kOhm
Heater current2.5A
Plate current60 ma
Transconductance5.5 ma/V
Amplification factor4.2µ
Power output>/= 3W
Min / Max Heater voltageMin : 2.25V
Max : 2.75V
Max plate voltage450V
Max cathode current100 ma
Max grid resistance under fixed bias0.51 moh
Max plate dissipation power15W
Max grid nagative voltage-120V
Max evelope temperature150°C
Dimensions150 x 55mm
Weight75g
Contacts number4
QuantityMatched pair (two matched tubes)
 
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ELECTRO-HARMONIX GOLD 2A3 Power Tube Platinum Matched Gold Plated Grid (Matched Pair)
The high quality Electro-Harmonix 2A3 power tubes are tubes with direct triode heating by oxide cathode. They are ideal for a low frequency power...

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