The M3 is a basic 2-channel mixer with 3-band EQ - kill switches - transform buttons and a slope adjustable/reversible crossfader for scratching. This mixer also features a sleek new look as part of Numark's new "M" series mixers.
The M2 features two phono/line switchable (RCA) - two line (RCA) - mic (1/4") inputs - master (RCA) - Record (RCA) - Headphone (1/4" stereo) outputs as well as a 3-band EQ and gain per channel as well as kill switches and transform buttons for creative mixing.
There is also gain and tone controls on the mic input and headphone out. The replaceable crossfader with reverse and slope-controls makes this a great choice for DJs looking for a scratch-friendly mixer on a budget.