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The CV181 is the British military version of the 6SN7 family with a larger bottle and lush, full-bodied sound. Shuguang’s CV181-Z (Treasure series) and CV181-T (Nature Sound) are among the most praised modern production CV181 tubes.
Lineup
CV181-T (Nature Sound)
Nature Sound series, design-finalized in 2012 – transparent and airy presentation.
CV181-Z (Treasure)
Treasure series with carbon-coated black bottle and premium internals.
Specifications
Click an image to view the full-size specification sheet.
📄 Shuguang Catalogue 2024 (PDF)
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*We also accept custom orders for factory-level burn-in, precision testing, matched pairs / quads, special grading and OEM requirements. For a quotation or consultation, please contact us here.