The sound system provides sound input and output through the built-in microphone and speaker. The user can also connect external input and output devices by way of the headphone jack, the Apple Speaker minijack, and the USB ports.
| Note: Some configurations come with Apple Pro Speakers. |
To maintain the highest fidelity when digital audio program material from CDs or DVDs is played, the audio data is kept in digital form until just before being sent to the sound output jack or the headphone jack. A switch mode power amplifier provides the power for the external speaker.
The sound system supports sample sizes up to 24 bits and sample rates of up to 48 kHz.