Editorial Standards

Sources

Electrical specifications come only from manufacturer datasheets or equivalent primary sources. Each verified value lists its source and verification date.

Unverified data stays private

Records that haven't been checked are kept as drafts. Where a published page lacks verified specs, we say so instead of guessing.

Replacements

We never treat a tube as a safe replacement just because it fits the socket. A substitution is listed only after electrical compatibility is confirmed from cited sources, and we still advise checking your amplifier's documentation.

Corrections

Every record has a change history. Errors are corrected and the verification date updated. To report an error, email hello@tubefinder.com.