Bought this just to add another 4 (5) stereo inputs and without realising til it arrived that it connects internally to the Hexmix I have without even using two inputs on the Hexmix. Bonus win. This with the Hexmix and the Hexpander, gives me 6 mono inputs with EQ and Aux send, 4 stereo inputs with level control (1 without), 3 stereo returns. This is now a pretty solid modular mix set up. One wish it had a mute switch for each of the 4(5) stereo channels.