Keywords: bright indoor Each channel uses a 2N3819 as source follower and hi Z headphone being Rs (source resistor) itself. Source followers as cathode or emitter followers have a very high input impedance and a low output impedance hence a large power (current), (no voltage) gain. Each channel uses a 2N3819 as source follower and hi Z headphone being Rs (source resistor) itself. Source followers as cathode or emitter followers have a very high input impedance and a low output impedance hence a large power (current), (no voltage) gain. |