Audio and Sound Equipment Design iFi Retro System All-in-one home audio system by Vincent Luke The Retro Stereo System is an audiophile standard, all in one stereo system for everyone. The exterior has a modern, yet classic stereo look. The interior encompasses an all valve amplifier, new audio, power and connectivity circuit designs. The Retro Stereo System supports high resolution audio formats up to PCM768kHz and DSD512. Its wide versatility spans wireless Bluetooth, aptX, USB, digital and analogue inputs to vinyl records. There are also headphone connections. It is an environmentally friendly design, with a bamboo chassis alongside a high efficiency power supply design.