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The 811A (Chinese designation FU-811) is a zero-bias transmitting triode used in RF amplifiers and adventurous audio designs. In Shuguang’s program since the 1970s.
Lineup
FU-811 / 811A
Zero-bias transmitting triode, design-finalized in the 1970s.
Specifications
Click an image to view the full-size specification sheet.
📄 Shuguang Catalogue 2024 (PDF)
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