Apple MC561LL/A 用户手册

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 specified 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 specified 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 specified 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