Эквалайзеры
HALO DB Technologies Pioneer Light Studio ACME Park Audio BIG DeliEffect JBL Professional DiscoEffect OSRAM (Германия) Allen & Heath Electro-Voice APart (Бельгия) Philips SANYO Shure Panasonic Nightsun Technics Crown (США) Turbosound HKAudio Polarlights MARTIN (Дания)