On Order. With close to one million units sold, the UB mixer series has become one of the most popular mixer series of all times that has no doubt connected musicians all over the world. Our new XENYX mixers will take you to an even higher plane. The XENYX 2222FX has 22 inputs and 3 Aux Sends for each channel. Additionally, 2 subgroups with separate outputs have been incorporated for routing flexibility.