K8 is a lightweigh battery powered PA for application from education, street performance, to home entertaiment, it has all the features you need, from reverb to feedback suppression.

SC1003 is designed for wedding, street performance, conference meeting etc., 10" long excursion subwoofer with twin asymmetrical loading design to enhance efficiency,   8 pieces of 3.5" full range neo driver can provide 140 degree horizontal and 40 degree vertical coverage, onboard DSP for distortion free driver protection and and smooth frequency response.

SC1203 is the biggest guy in SC series family, it can output 3dB more for over 200hz, and 5dB more for below 200hz output compare with SC1003, so it's more likely for outdoor event or where high sound pressure is needed, one pair of SC1203 can be loaded in a hatchback vehicle easily for one person operation