There are four channels on this amp: Regular input, Foot controller, Headphone/line out, and MP3/line in (for playing along to MP3s). The MG footcontroller, though it is not included, is pretty much essential if you want to change tones (from clean to distortion) on the fly. The emulated headphone jack of the MG30FX allows you to hear yourself playing through headphones while the amp itself stops making noise, which is ideal for night time practicing. The 2010 MG30FX is an updating of previous models in that it has Frequency Dependent Dampening (FDD), 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. This amp is a step down from the higher cost Marshall MG50FX in that the MG50FX has 50 watts of power (as opposed to 30 watts), a 12" speaker (as opposed to 10"), an FDD switch (for more tone choices, as opposed to having the effect on at all times), and an external FX loop (which allows you to use external effects with less noise than using them through the regular input). With its low price and sparse array of effects, the Marshall MG30FX is geared toward learning guitar players.