Use these to replace all other 12AX7, ECC83, and 7025 tube types. The Svetlana 12AX7 has high gain, ultralow microphonics and superb linearity. This new production tube is manufactured at the Electro-Harmonix New Sensor Corp. owned Xpo-Pul factory (also known as Reflektor) in Saratov, Russia.
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