Lee de Forest did it right in 1907 by connecting only a capacitor to the grid of his 1st triode electron tube amplifier on planet earth

Dr. Lee de Forest, father of electronics patented on 1908 the inclusion of a control grid inside an evacuated electron tube. Thus flow of electrons could be controled by an external tiny signal and the first electronic amplifier was made. After so many years we now have the internet. And the human race is inteligent not to waste earth's energy resources on sensual virtual reality. Ather all it is less energy consuming to caress a real human hand or foot. Lee de Forest on patent US879,532 clearly states that when the grid is flowting by isolating it with a coupling capacitor tiny rdio signals get even more loud on the earphone. This is confirmed on the Pleiades V6 1H4 front end microphone preamplifier. When grid is at space potential and a dynamic microphone is connected to the input transformer it sounds not very unlike the universe expanding. So low noise is the first amplifier on our planet. (a fuse should be connected in series with any battery for safety, a pad, series resistor, potential devider etc should be connected after the front end small signal amplifier to avoid overloading of subsequent amplifying stage(s). Further reading: patent US879532, Operating Features of the Audion - E. H. Armstrong, Open Grid Tubes in Low-level amplifiers - Robert J. Meyer - Oct., 1944 - Electronics Magazine