THE MARANTZ MODEL 40N NETWORK INTEGRATED AMPLIFIER. $2500. Built-in Bluetooth. Built-in Wi-Fi including the Denon-Marantz HEOS wireless music whole house system. Conservative true hi-fi audio rating at 8 ohms of 70 watt channel. 4 output transistors per channel, common to separate power amps. Photo preamp. Stream music direct from the internet without using your phone. Amazon Music, Pandora, Spotify, Tidal, Apple Airplay 2. Chromecast. Hook up hard to drive speakers. We have it hooked up to the B&W 805 D4 $8500 speakers. Come Listen.