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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: I've never heard of a tube that could provide a signal through a powered down pre-amp. As ... posted by PureAudio on November 11, 2006 at 18:11:57:
A powered off preamp may still pass a signal depending on the circuit topology. If there is a feedback path between the input and cathode/plate of an output stage, signal will leak around it if the power is off.Capacitors, especially those oversized "audiophile grade" parts have been known to be microphonic. So if you got one of these with a feedback loop, this would account for your microphonic preamp with no power applied.
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- It can happen, that is - gusser 10:48:30 11/14/06 (0)
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