Noise Testing the 12AX7 Vacuum Tube

Описание к видео Noise Testing the 12AX7 Vacuum Tube

audiotubes.com now offers noise testing of 12AX7 and other tubes at high amplification. This weeds out tubes that might test OK on a tube tester, but would be too noisy or microphonic for critical audio use. The noise test fixture allows not only ear testing for noise and microphonics, but visual tests showing the noise (or lack thereof) on an oscilloscope display.

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