ELECTRO MAGNETIC AMPLIFIER CO. headphone amplifier NEW


The design of the headphone amplifier they will be used in is such that the signal amplification is all done passively with these transformers instead of actively using tubes or transistors. Because a passive device can't provide power because of that silly law of conservation, active devices are used on the output but they don't amplify the signal. They just provide a low output impedance and the current required to drive the load.