Connection: Lighting Cable / Micro USB to USB-B to DAC

I was wondering if I could get a recommendation for adapters to play music off my iPhone 6s and Nexus 7 tablet to my Music Hall dac15.2 which has a USB-B female? Will the phone and tablet even communicate and accept this connection? 

First time poster, I tried doing a search for this topic and was unable to find anything concrete. Sorry if this has been brought up before. 

Thanks! 

-Nick