Quantum Electronics IA150 DIN help

I have the above amp that I use primarily with a turntable, however due to it's location I would like to be able to plug in an ipod dock.

There are "aux" and "tape" connections on the back that to me look standard 180 degree 5 pin female DIN sockets, however the following is printed on the back;

"Important:Tape socket not to Din Standard use Quantum Din to Phono lead or special Quantum Din to Din lead. Disc matching internally. Consult handbook"

Obviously I don't have the handbook. I took the lid off in the hope of finding a schematic, but sadly no, and I can find very little on the internet.

Any help much appreciated.

Thanks, James