 The department 10 amp series is 100 watt pedal size amplifier. There's a total of three different series. They all have an FX loop, XLR out, quarter inch line out with cab rig, midi capabilities, and two nine volt outputs to power up your third party pedals. All three of them can be used as an audio interface and they all have universal power supplies so you can take it anywhere in the world without any transformers. So which one's right for you? Amp One is a great pedal platform amplifier for anybody who's using a modeler and for anybody who wants to use their own pedals to shape their own sound. The Amp Two is an all-in-one amplifier. It comes with modulation, reverb, delay, and tuner. The Amp Three is great for players who like to use multi-channel amps and also amp distortion. Which one's right for you? And yes, you can have all three of them.