Rapid audio amplifier project kits rapid kit aimed at key stage 3 the rapid audio amplifier project kit provides teachers and students with a stimulating and inexpensive project through which to study the subject of amplification the kits contain a comprehensive selection of components for schools working on audio related projects linked to the national curriculumthe kit is available in packs of 5 or a classpack of 20 kits offering a worthwhile saving on parts bought separately ideal for