The Russian 6H9C is also known as 1579 in Russia and is equivalent to the 6SL7GT tube. This 1579 version is the top grade given by the Russian military. The 1579 label marks the tube as having well balanced triodes, low microphonics/noise, and long life (5000 hours or more). View the 6H9C tube data sheet.  Other Russian tubes  6SL7 Tube TypesClick image to enlarge Availability: Out of stock. |
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