For those with the GK-1R, the new source selector chip (mute, HT, etc.) makes a huge improvement in functionality and user-friendliness.
On power-up, the GK-1R now mutes for a few seconds, and then defaults to the source of your choice. The HT bypass only functions (and can only be activated) if the Aux source is selected. So, connect your HT processor to the GK-1 Aux input and life is sweet.
Before this change, I had disabled the HT bypass to avoid firing my tweeters into the neighbor's house if someone should hit the HT bypass by mistake. Now that risk is gone, and the system works extremely well.
Peter