Yamaha has released a new update which adds important features to the Aventage RX-A8A, RX-A6A and RX-A4A amplifiers. Firmware 1.65 introduces the support for Ultra HD resolution at 120Hza useful feature for video gamers that at the end of last year also arrived on the Aventage RX-A2A and on the RX-V4A, RX-V6A, TSR-700 and TSR-400 models.
However, there is an important difference between the two amplifier groups: the Aventage RX-A8A, RX-A6A and RX-A4A have HDMI 2.1 with a bandwidth of 40 Gbps and can therefore handle Ultra HD / 120 Hz signals with a 10-bit 4: 4: 4 color sampling. All the others are equipped with HDMI 2.1 at 24 Gbps, sufficient for signals with color sampling in 4: 2: 0 at 10 or 12-bit.
Still on the subject of resolutions, compatibility with the8K at 60Hz. Also in this case, the same argument as above applies: with the 40 Gbps ports you can view 8K / 60 Hz signals in 4: 2: 0 at 10-bit while with those at 24 Gbps it is necessary to compress through the Display Stream technology. Compression (DSC: we talk about it in detail in the deepening on HDMI 2.1).
The firmware also introduces the ability to manage video signals with high dynamic range in the HDR10 + format, that is the standard promoted mainly by Samsung and characterized by the use of dynamic metadata. Recall that the three Aventages are already compatible with HDR10, HLG and Dolby Vision.
Following all the changes introduced with version 1.65:
- Support for 8K / 60Hz and Ultra HD / 120Hz signals
- Improvements in internet radio and podcast playback
- New MusicCast CONTROLLER function
- Fixed a bug that occurred on specific streaming services when playing Dolby Vision content
- Fixed a bug that reported errors when setting up or connecting to MusicCast Surround / Stereo
- Fixed a bug that occurred when consulting SiriusXM Talk lists
- Fixed a bug that caused rebooting in some situations
The firmware is available on the Yamaha website (link in SOURCE) and can also be downloaded directly from the amplifier; in the latter case the device may not find it immediately since in many cases the OTA (Over-The-Air) release occurs in stages.