I am a technical person but not a musician. Started singing karaoke at home a couple of years ago but quite seriously. I needed a unit to do a couple of things. First to hook up to a PA and allow me to mix karaoke tracks from a PC or smartphone with vocals from a dynamic mic and have decent vocal effects. The compression/eq and reverb that come on Line 1 really transform the vocals and make you sound like a "real" singer. Second, I need to be able to mix a track coming out of one application, in my case the Karafun windows app, with my vocals and record it to a second application, Audacity for example. The Loopback function on this device solves my problem and allows me to use the real time effects. I was struggling with getting a software mixer working on my laptop and this is much easier. I am not really into track by track recording but this unit doubles as a conventional USB audio interface with "dry" recording of the main inputs. Apart from these main functions, the unit is also very nicely designed across the board with every input that I could conceive needing plus PA, monitor and headphone outputs. Really well conceived little box that works brilliantly.
Palm Beach, FL