@Ron The Blue Yeti is a USB microphone. I think you would need some kind of adapter to use it with your iPod. It would also need a way to get power. (The Mac supplies power via the USB, but I doubt the iPod touch could do that.) The microphone I use with my iPhone is the Shure MV-88, which is based on a Lightning connector. It’s a lot more expensive, but it is quite amazing for the size and quality.