Apple Mac Pro - Page 105

105Chapter 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.
Â Maximum input voltage: 2V
rms
(+8.2dBu)
Â Input impedance: Greaterthan17kilohms
Â Signal-to-noise ratio: Greaterthan90dB
Â Total harmonic distortion + noise: Lessthan-85dB(.006percent)
Â 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.
Â Output voltage: 2V
rms
(+8.2dBu)
Â Output impedance: 33ohms
Â Signal-to-noise ratio: Greaterthan90dB
Â Total harmonic distortion + noise: Lessthan-85dB(.006percent)
Â 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.
Â Maximum input voltage: 39mV
rms
(-26dBu)
Â Input impedance: Greaterthan1kilohm
Â Signal-to-noise ratio: Greaterthan60dB