The MG footcontroller allows you to change tones (from clean to distortion) on the fly. The emulated headphone jack of the MG100HFX allows you to hear yourself playing through headphones while the amp itself stops making noise, which is ideal for night time practicing. The 2010 Marshall MG100HFX is an updating of previous models in that it has a Frequency Dependent Dampening (FDD) switch, which gives the sound of this amplifier depth, and mimics the classic tone of Marshall's all-tube amplifiers. The on-board digital effects (chorus/phaser/flanger/delay) are also a new feature. You can have one of these effects on at the same time as the digital reverb effect. This amp is a step up from the lower cost MG50FX in that it has 100 watts of power as opposed to 50 watts. However, the MG100HFX is only an amp head and not a combo, and so needs to be connected to a cabinet because it has no speakers of its own. Compared to the slightly higher cost MG101FX, the 12" Custom speaker is all the MG100HFX lacks. The Marshall MG100HFX comes in a black color.