Smx 30 stereomono switchable video microphone the smx 30 was engineered to be the ultimate video microphone with outstanding audio quality appealing design ergonomic form factor and all of the functional features one expects in a top of the line camera mounted microphone stereo or mono why choose if you only have the budget to buy one microphone for your camera why should you have to choose between mono or stereo the smx 30 is stereomono switchable so you donrsquot have to house