Reporting question for Vacuum Tube - 12AX7, Tung-Sol Reissue

Vacuum Tube - 12AX7, Tung-Sol Reissue

What is the difference in gain and tone with the ecc83 and ecc803s (gold pin variation of this) and why isn't the gold pin listed as an ecc803s when it is on the box/label?

Both of these Tung Sol 12AX7's are ECC803S. They are very close but the gold pin will have slightly less gain in the mids. The ECC83 is a mid gain tube and will have less gain than a 12AX7 (ECC803S). For a comparison of all the 12AX7's we carry, click on the tech corner link at the top of this page.