Apple MD772LL/A Personal Computer User Manual


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111Chapter 5 What’s Under the Hood
Analog audio line in (typical values)
Basedonatypicalsituationwithplaybackofa1kHz,-3dBFS24-bitsinewave,44.1kHz
outputsamplerate,unlessotherwisespeciedbelow.
 Maximum input voltage: 2V
rms
(+8.2dBu)
 Input impedance: Greaterthan17kilohms
 Signal-to-noise ratio: Greaterthan90dB
 Total harmonic distortion + noise: Lessthan-85dB(.006percent)
 Channel separation: Greaterthan85dB
Analog audio line out (typical values)
Basedonatypicalsituationwithplaybackofa1kHz,-3dBFS24-bitsinewave,44.1kHz
outputsamplerateinto100kilohms,unlessotherwisespeciedbelow.
 Output voltage: 2V
rms
(+8.2dBu)
 Output impedance: 33ohms
 Signal-to-noise ratio: Greaterthan90dB
 Total harmonic distortion + noise: Lessthan-85dB(.006percent)
 Channel separation: Greaterthan85dB
External microphone input using the headphone jack (typical values)
Basedonatypicalsituationwithplaybackofa1kHz,28mV
rms
sinewave,44.1kHzinput
samplerate,24-bitsampling,unlessotherwisespeciedbelow.
 Maximum input voltage: 39mV
rms
(-26dBu)
 Input impedance: Greaterthan1kilohm
 Signal-to-noise ratio: Greaterthan60dB
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