[sdiy] Headphone amps using op-amps

Scott Nordlund gsn10 at hotmail.com
Wed Dec 12 22:57:48 CET 2012

Note that increasing the headphone amp's output impedance with a series resistor will reduce the damping factor and affect the frequency response of the headphones. It's a nice way to prevent damage, but it's not always a great choice for sound quality.

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