Everyone has PA sytems, but hardly anyone has them small and discrete - which is what you really need for conferences or small venues; with up to 900W RMS total power - let the voice be heard - but not seen! Systems from DB, Fostex and TC Helicon. Mixers from Phonic, Audio Developments, Shure, fostex, with 24 to 4 channels.
With 35 years of stage experience (started young!) I know what systems work, what microphones work where, and who needs what. Just call.