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Vintage threads from the first ten years
Input Impedance of typical Guitar Amp?
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 9/8/2000 7:43 PM |
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Alex Kurylak |
Input Impedance of typical Guitar Amp? Anyone have any idea what the typical input impedance is for a guitar amp? |
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| 9/8/2000 8:09 PM |
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| nuke |
Around 1-megohm. |
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| 9/10/2000 8:07 AM |
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| Joe |
In my amp it is 1M. |
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| 9/12/2000 11:54 PM |
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| Rich | Look at the resistor between the first stage's control grid and ground, then add in any series resistance(s) between the input jack and the grid. The typical preamp tube's actual input "Z" is high enough in comparison to the control grid-to-ground resistor's value that you can essentially disregard it. |
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