It takes professional level equipment to produce quality sound.  But more important is the technical expertise to know how to set-up the sound system correctly--including knowing when additional speakers may be needed such as sub woofers and remote speakers.   I always carry back up equipment. This includes not only amplifiers but extra microphones , batteries, speakers, power cords, and music. 

Lights can certainly enhance a party atmosphere and various lighting packages are available.  Contact me to discuss your particular light and sound needs.