This is a Mackie 1202-VLZ 12 channel mixer, low z and 1/4 inputs and preamps on the first four channels and stereo inputs on the next four. Rotary knobs not sliders for the channels, it is small in size but very full featured and sounds very good. It includes the manual which shows different ways to setup it up for different applications along with a good description of the signal flow so you can get the most out of it. The rotary knob shaft on channel one is a little bent but that is the only thing wrong on it and it doesn't affect the performance of it one bit, everything works and is in good shape. I've gone down to one keyboard now so this is over kill channel and feature wise and for my home studio I have a Mackie 14 channel, so I no longer need this.