5840 replacement vacuum tube for the TELEFUNKEN AK-47mkII and ELA M 260 microphones

Manufactured in the USA, these high-quality sub-miniature pentode tubes are well known for their extremely low noise and low microphonics. The 5840, also known as the EF732, is featured in TELEFUNKEN Elektroakustik's current production models of the AK-47mkII and ELA M 260 microphones. These tubes are also often utilized in Class A/B and Class A Design circuits, offering a balanced and rich tone.

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