Are you a gadget person? If you do then, you know all about amplifiers and audio systems such as classroom amplification and conference audio systems. When I was in College, I worked in a library and we have an audio visual room complete with all the audio systems as well as visual technology. The faculty and students need these technology to aide their studies and learning activities.There is a company called Roemtech which designs and manufactures classroom audio systems. If you are looking to buy plenum rated amplifiers, mini amps and speakers, check out the links which is provided here. I remember in my biology class, no matter how many we are in the classroom, the classroom audio helps a lot and we heard the discussion of our teacher so clearly. Sometimes, if the audio visual room is busy with other class reservation, we have to stay in our room and the teacher use the classroom audio systems. We borrow the overhead projector, slides and other multi media gadget from the audio-visual room of the library and we can stay inside the room and continue with the discussion.
The classroom audio systems are also needed in the class where speech is taught, in Master's Degree subjects, in all Science class and even in a daycare centers. I know one daycare facility that install a classroom audio for kids to acknowledge sounds as introduction to teach sounds and the alphabet.