That's a decent unit. Are you going to try to use this for karaoke or in home recording? You may find you will get a much hotter mic & more feedback problems using them live. The gain on the board itself will practically be shut off. All the adjustments will be made from the unit.
Hell when I worked in a couple studios ( even bought a couple for my own), they were using
http://www.musiciansfriend.com/product/ ... sku=180581
Made a huge difference & for the price, can't be beat. They were also using Avalon VT747 & Focusrite ISA 220 mic pre amps & typically would favor the Arts for the simplicity & good sound!