ONKYO Australia - ONKYO Receivers, Amplifiers & More Shop all products ONKYO, including ONKYO Receivers, ONKYO Amplifiers and much more. RIO Sound and Vision stock the largest range of ONKYO products, available in-store and online. Free delivery Australia wide. ONKYO products provide high quality products for your home theatre or surround sound system. All of RIO Sound and Vision's products come with a full Australian 3 year warranty. As the largest ONKYO dealer in Australia, with over 25 years in the Vision and HiFi industry, RIO Sound and Vision can tailor your new ONKYO system with ease and affordability.