Suitability of the 1U4 electron tube as a microphone amplifier

At your risk. All safety precautions should be followed. Any voltage or current can be dangerous.


See previous post:
https://euroelectron.blogspot.com/2019/08/daven-preamplifier-with-3-1u4-electron.html


This is a very low power consumption direct heated cathode electron tube.
Direct heater cathode power consumption is less than 50mA at 1.5V !!!


This is the datasheet:


https://frank.pocnet.net/sheets/127/1/1U4.pdf