Hi there! Like almost all amplifiers, the output for the headphones is taken from the same main amps that drive the speakers, but due to the hi voltage they deliver, some method of reducing it, is used. The most common is to put a series resistor between the amp out and the HP connector. So, there's no much difference in amp behavior if you use Headphones of different impedance. And on the other side, a hi imp HP will receive less current but more voltage opposite to a lo imp HP that will receive less voltage but more current, in this way, almost the same power will be delivered to the HPs. Maybe if you try HPs with different impedance, you will notice differences in sound, but as you can not choose the impedance in a certain brand and model of HP, you will have to follow your overall perception of it to decide which one to choose Good Luck
Answers & Comments
Hi there!
Like almost all amplifiers, the output for the headphones is taken from the same main amps that drive the speakers, but due to the hi voltage they deliver, some method of reducing it, is used. The most common is to put a series resistor between the amp out and the HP connector. So, there's no much difference in amp behavior if you use Headphones of different impedance. And on the other side, a hi imp HP will receive less current but more voltage opposite to a lo imp HP that will receive less voltage but more current, in this way, almost the same power will be delivered to the HPs.
Maybe if you try HPs with different impedance, you will notice differences in sound, but as you can not choose the impedance in a certain brand and model of HP, you will have to follow your overall perception of it to decide which one to choose
Good Luck