European Version AIWA TPR-950E Line input modification hint:
Inside of box
Using its existing Phono input DIN socket as line-in interface is the best way, all you need to do is By-pass internal RIAA phone amp stage.
Outside o box
You may need an additional pair of RCA female or 3.5MM stereo plug to 5 pin male DIN (to 950 phono female input) cable.
How to use
Switch to phono and connect to your IPHONE IPOD with 3.5MM cable or connect to your RCA type source with RCA cable
No ugly hole , no who-knows switch, how do you like it?
Diagram shows one chanel only, you need to do both channels.