I'm using a NuForce iDo DAC for my iPod/iPhone 4 audio solution which has amazing quality and sound. Also responds to the apple remote so you can change tracks with the remote, etc. However, the issue was how to mount the unit in an upright manner while allowing charging to be done. Solution to follow.....................I run the 30 pin into the back of this and not only is the audio fed it is charged as well. Yes, the iDo cable direct into the bottom of the iPod/iPhone charges as it plays as well but then it's just laying around. I wanted a solution to mount the iPod/iPhone. This is slick...........
http://www.amazon.com/Black-Charging-Cradle-iPhone-output/dp/B004LSN0GS/ref=sr_1_20?s=electronics&ie=UTF8&qid=1392240575&sr=1-20&keywords=ipod+charger+stand
http://www.amazon.com/Black-Charging-Cradle-iPhone-output/dp/B004LSN0GS/ref=sr_1_20?s=electronics&ie=UTF8&qid=1392240575&sr=1-20&keywords=ipod+charger+stand