Can you use the balanced for low sensitivity higher impedance headphones and the single ended for lower sensitivity and lower impedance headphones at the same time - ie: are both active simultaneously?

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docradman
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Jun 10, 2021
I believe that there is double the power on the balanced output as compared to the single ended. They can be used at the same time. In my experience headphone loudness varies on the impedance (ohms- the lower the number the less resistance to flow). Sensitivity means how many Watts to get a certain spl (sound pressure level). if a can has 90 dB sensitivity it can reach 90 dB with 1 watt. 100dB indicates that level with 1 watt. According to trade dictum each 2dB increase in spl requires double the Watts. Assuming that is true the 90dB can would require 16 Watts for the same spl as the 100dB sensitive cans would achieve with 1 watt. I would try the real efficient ones single ended as they shouldn’t need much power and the less efficient ones balanced.