This is the Marantz DPM7 digital amplifier prototype. It was build in 1985 as an all-digital amplifier. It was never sold on the market. The DPM7 eventually saw the light of day in 1991 as the AX1000 'audio computer'.

Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype Marantz DPM7 digital amplifier prototype