As powerful as our smartphones have become, there are still limits to what it can do. It isn’t exactly easy, for example, to use one for recording professional-sounding audio. Not easy but not impossible, especially when you have the right accessories for the job. IK Multimedia is renowned for its boxes and attachments that turn smartphones into portable or makeshift recording studios. And its latest iRig Mic Studio XLR brings that professionalism to audio recording, in a device that is not much longer than an iPhone.