Originally Posted by VirusKiller
But Meridian, for whom timing is everything, will need to time synchronise the two channels. I suspect this is non-trivial.
I do not agree with you. In real-time mode it is different than in buffered mode (as Audio Remaster works), but still very simple to do. It will take no additional CPU power. And even if their implementation would take CPU time, my proposal leaves time because only 4 channels need to be upsampled instead of 8. The other 4 are already upsampled in the HD621.