Denon and Marantz are to release upgraded ‘A’ spec versions of their flagship AV amplifier and processor. The Denon AVC-X8500A is a replacement for its 13-channel AVC-X8500 multichannel amplifier. Marantz is shipping the AV8805A, an update on the 13-channel AV8805 processor. The two models have been fast-tracked, to replace the AVC-X8500H and AV8805 which suffer from the 8k HDMI bug, which has bedeviled owners. The Denon AVC-X8500HA features 13ch of 210W amplification with de