So I've been trying a Roland DJ 707m and it's completely useless. It's impossible to hear the effect of the filter/effect control through the headphones, so you can't hear what a track will sound like before playing it and once you are playing your filter/effect adjustments can't be heard.

Other than an old MC6000, can anyone recommend something similar (with 2 mic inputs with effects and a small size) that's actually usable for DJing?

Thank you