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Looking for high impedance oscilloscope preamp

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Freddybaby

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We need a high quality low noise preamp with higher than 1M//20pF input. I don't want to build this I want to purchase but can't seem to find anything that's not 1M.

We test devices that need variable load requirements, DC- 1MHz and signal levels from millivolts to 100V (I realize this will make my impedance requirement more difficult). We could live with +/- 10V input for now...
 

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