Symptom
The sound quality from the dock's line out port is poor.
This happens when the dock is connected to your computer using the Dock Connector to USB 2.0 + FireWire cable, and the equalizer (EQ) is turned on.
Solution
Use one of these solutions:
- Turn off the equalizer.
- Take iPod out of the dock.
- Disconnect the Dock Connector to USB 2.0 + FireWire cable from the computer. It's OK to keep the FireWire part of the cable plugged into the AC power adapter.