Antenna distribution is not an exciting topic. It"s sort of akin to talking about pop cans. They do the job. When they don"t do the job, you know it. If you"ve got more pop to distribute, you need more cans, blah blah blah. Really, that probably wasn"t the best comparison, but you"re with us. Antenna distribution. Sort of an "is what it is" topic. But when you need a system for your Audio-Technica 2000 and 3000 series wireless systems, you get the ATW-DA49. Because that"s what it"s made to do. It"s got two 1-in/4-out RF channels. You can use either passive or active antennas (antennae?). There you go.