AKP Valuations, page-118

This is a competing technology. If you watch the video of the lecture given by Yuval Cohen back in 2011 this is one the alternate approaches to DSR that he describes.

This may be a far inferior technology but the best technology doesn't always win in the marketplace. Clarion is owned by Hitachi and they would know about AP. Is this a pre-emptive defensive move?

The makers of existing loudspeakers, amplifiers and high-end DACs aren't going to roll over and let AP become a monopoly without putting up a fight.