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Welcome to Sound Design. Does your PC have a combined TRRS headphone/microphone socket? Older PCs may have separate sockets for headphones and microphone. The fact that your headset was supplied with a cable with a TRS plug suggests that the headset jack (socket) only provides an analog connection to the earpieces not the microphone. You could try a TRRS-...


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First a short historical notice. In the old days, professional headphones often where 600 Ohm, sometimes 250 Ohm. The IEC standard from 1996 recommended an output impedance of 120 Ohms for the headphone amp. This worked perfectly as the supply voltage in the headphone amplifier often was 20V or more. The value of 200 Ohms output impedance on the HX3 worked ...


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