The iRig is simply a patch cable with a built-in pre-amp that connects an electric guitar or bass to your device using the line-in on the headphone port, providing a 1/4” mono input for a standard guitar patch cable and a standard 1/8” (3.5mm) stereo headphone port to connect a set of headphones, amp or powered speakers for output. iRig’s headphone port outputs audio from the iOS device rather than passing through the input,…