The iPhone 5’s Lighting Connector which has replaced the 30 pin connect of its predeccor. Not only the iPhone 5, but the latest iPod Touch also has the same.
Now this has affected the gadgets that uses 30 pin connectors, who are unable to connect to iPhone 5. Apple itself released a lighting to 30 pin adapter, to solve this problem. As the Lightning adapter is digital, we need a digital-to-analog converter (DAC) inbuilt the accessories to convert the signals.