• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

NTK " Teds tube mic"

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"When you switch on the unit, the blue LED on
the power supply will not glow immediately, it
will gradually glow brighter then stabilize. It is
powered by the filament voltage in the NTK’s
valve, which takes a few seconds to ‘warm up’,
so the LED is in fact not only an on/off indicator,
it also shows when the microphone is stable
and ready for use. Although power is normally
achieved in approximately 12 seconds, it is
wise to allow a minute or two to really ensure
that the NTK is ready for use."

Can this stop large dc at output,when starting up?
 
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