A fantastic use of the iPhone/iPod... with the right software
The Synthstation 25 incorporates a very novel idea to allow an iPhone or iPod to be docked to the controller. It is designed to use the Synthstation software app, which will cost an additional $1.99 and is a download from the app store. I was, however, very disappointed in the Synthstation software because it does not allow real-time sequencing on the keyboard, which makes it much less useful for any kind of live performance. The good news is that I discovered the app, "NanoStudio" which is now compatible with the SynthStation 25. The app is $14.99, but is well-worth the price. It is a powerful sequencer and works amazingly for live recording. This software will take your SynthStation from being very average to excellent.
My only other disappointment is that it does not have an expression pedal output, but it does support standard USB MIDI if you want to use it as a controller with your computer. The cable, however, is not included.