About the 422A
The Western Electric 422A is a vintage full wave rectifier tube manufactured in the USA, featuring a double diode with indirectly heated cathodes. It is designed to supply direct current from an alternating current source, commonly used in high-end audio equipment and tube DACs. The tube has a heater voltage of 5 volts, a maximum peak inverse voltage of 1800 volts, and a maximum DC output current of 400 mA. It is highly regarded for its strong performance and unique plate structure, distinct from other rectifier tubes like the 5U4G. The 422A is often found in NOS (new old stock) condition, sometimes sold in matched pairs, and is considered a premium, collectible item in the audiophile community. It has been tested on calibrated tube testers to ensure strength and reliability. The tube's vintage status and rarity contribute to its high value and desirability among HiFi enthusiasts.
Specifications
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