The three high-end models now include a pre-amplifier mode that disconnects the internal amp and gives a clear signal path for your audio — useful for people who have speakers powered by external amplifiers, and a feature that was previously limited to only the flagship model. A new feature is based in a Bluetooth transmitter, so that it can pipe audio directly from a headphone or a hearing aid, if you have the speakers or not.
A major difference between the four models is the amount of output power and channels supported, however, the flagship AVR-X6700H is the only one that will get DTS:X-Pro supports up to 13 channels of decoding for your 7.2.6 or 9.2.4 speaker configurations once it receives a software update later this year. The rest will have to do with Dolby Atmos, Dolby Atmos, the Height of the Virtualization Technology, DTS:X, DTS Virtual:X, IMAX, Improved and Auro-3D.
Two high-end models to begin shipping this week, with the 11.2-channel AVR-X6700H ($2,499) and 9.2-channel AVR-4700H ($1699) is now available via Amazon and other retailers. The 9.2-channel AVR – X3700H ($1,199) is going to start shipping on July 15, while the 7.2-channel AVR-X2700H ($849) is scheduled to go on sale, August 15.
Buy Denon AVR-X6700H at Amazon – $2,499
Buy Denon AVR-X4700H at Amazon – $1699