It may be possible with an extremely low noise preamplifier such as the Pleiades V6. Phantom powering may be an option too.
The EF183 for example operates at about 5V including anode supply voltage when a resistor of a few megohm is connected from plate to grid to free electrons.
It operates even better when it is underheated so 150mA should be fine and possible for USB powering or phantom powering.
So it would be nice to make a whole small unit including a top quality analog to digital converter.
The Pleiades K117 JFET is great too as it can be made inside an XLR connector or a small Tuchel connector and take the high impedance of an MD21 HL for example and feed directly an electret mic input. Such inputs are on any device like iPad and can supply power directly to the JFET through their load resistor.
So we can have a world class extremely low noise studio quality pre preamplifier at minimum weight and power consumption and maximum portability.
The EF183 for example operates at about 5V including anode supply voltage when a resistor of a few megohm is connected from plate to grid to free electrons.
It operates even better when it is underheated so 150mA should be fine and possible for USB powering or phantom powering.
So it would be nice to make a whole small unit including a top quality analog to digital converter.
The Pleiades K117 JFET is great too as it can be made inside an XLR connector or a small Tuchel connector and take the high impedance of an MD21 HL for example and feed directly an electret mic input. Such inputs are on any device like iPad and can supply power directly to the JFET through their load resistor.
So we can have a world class extremely low noise studio quality pre preamplifier at minimum weight and power consumption and maximum portability.
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