Denon X-Series is a new series of advanced home theater receivers that will be the first in the world with support for 8k resolution. The four models in the X-Series all have an 8k input plus a number of 4k inputs.
The more important thing for most users – after all, 8k is still several years away – is what enables 8k: Support for hdmi 2.1. The new HDMI standard also has a host of other improvements, perhaps especially for gamers.
With HDMI 2.1 comes support for earc that enables significantly higher sound quality, variable frame rate (VRR), 4k video at 120 frames per second, auto low latency mode (ALLM) and quick frame transport (QFT) that reduces the lag between hand controls and the reaction in play. These are features that will benefit with the new generation of game consoles released this fall.
Three of the models have a function that previously only existed in really luxurious models: the ability to function as a preamplifier. This means that the receiver only decodes the digital audio signal and sends it to a final step without interfering with its own amplifiers.
All four support Dolby Atmos, DTS: X, Imax Enhanced and Auro-3D. They also have Apple Airplay and can be controlled with Google Assistant or Amazon Alexa.