The Sound Platform has a universal well dock that was designed by Apple. Through the use of different Dock Adapters, this universal well dock can accomodate all iPhones and most iPods. For more information, see this Apple article. The universal well dock does NOT accomodate iPads.
Soundfreaq includes Dock Adapters for some of the most popular devices (#14 for the iPod Touch and #15 for the iPhone 3G/3GS).
You can also use the Dock Adapter supplied with your Apple device or purchase one directly from Apple.
If you don't have a Dock Adapter and don't wish to purchase one, you can still use the dock without one. While the Dock Adapters provide a more finished product appearance, they are not functionally necessary.
For more information on how to install and remove Dock Adapters, please consult your Soundfreaq Owner's Manual.