Apple Mac Pro (Mid 2010) - Manual (Page 110)

110 Chapter 5 What’s Under the Hood
Optical digital audio in
Based on a typical situation with playback of a 1 kHz, 0 dBFS 24-bit sine wave, unless
otherwise specified below.
 Input sample rate: 44.1 kHz, 48 kHz, or 96 kHz
 Signal-to-noise ratio: Greater than 130 dB
 Total harmonic distortion + noise: Less than -130 dB (0.00003 percent)
Analog Audio Specifications
 Sample rate: 44.1 kHz, 48 kHz, or 96 kHz
 Jack type: 1/8” mini
 Bits per sample: 16-bit, 20-bit, or 24-bit
 Frequency response: 20 Hz to 20 kHz, +0.5 dB/-3 dB
Analog audio out using the headphone jack (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 150 ohms, unless otherwise specified below.
 Output voltage: 1.3 volts (root mean square) (V
rms
) (+4.5 dBu)
 Output impedance: 55 ohms
 Output power: 53 milliwatts (mW) into 32 ohms
 Signal-to-noise ratio: Greater than 90 dB
 Total harmonic distortion + noise: Less than -70 dB (.03 percent)
 Channel separation: Greater than 50 dB