Sound Revolution is an audio and video store at 2 Banksia Place in Goodwood Heights, Auckland, and it describes itself as an authorised dealer for its brands. It sells hi-fi, speakers, amplifiers, home theatre equipment and projectors, including short-throw and ultra-short-throw models such as the Optoma UHZ50 4K laser home theatre projector. The shop says it tests each product at home before selling it, so it only recommends what the customer needs.