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Using 250ohm headphones with amp and computer
post Sep 5 2012, 11:58
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I have found a reseller for Beyerdynamic DT990 headphones that is selling the 250ohm model for half that of the other models 32ohm and 600ohm. So the 250ohm model is within my financial reach as its $200 US lower than the others. I am also buying an integrated stereo amplifier from NAD electronics in Canada to use the Beyers with primarily. Does anyone know if the standard headphone jacks on amplifiers and receivers will adequately drive or power these? I can buy some AKG's that I know will work but have wanted to try these Beyers for awhile now. I know too that companies like FiiO make affordable (for my budget)desktop amps too that could work with the Beyers.
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post Sep 5 2012, 17:03
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Especially with receiver headphone jacks you're better off with a higher impedance headphone. The reason for this is that those jacks usually have a high output impedance which will act as a voltage divider. A dynamic headphone driver typically has a higher impedance at the resonant frequency and a lower impedance in the midrange to treble. Therefore, the voltage will be divided unequally (=> bass boost, "loose" bass). This effect becomes smaller if the headphones' impedance is high compared to the output impedance.

Sighted evaluation without blind testing is blind.
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