Good video, it explains the highlights quite well.
It's very disappointing though that the unit is locked at a paltry 48kHz, this is omitted from all of the info I've seen on the unit thus far. With the max sample rate of 192kHz and DAC's capable of of the same I feel you are doing potential customers a disservice by not pointing out that the actual internal processing is really only 48kHz and the impact that has on content with greater than 48kHz resolution. Thus the following is very misleading from your brochure:
"Bryston isn’t just for audiophiles. Music and movie professionals rely on Bryston to make their masterpieces. Hear at home what the artist intended with a Bryston SP4 theater."
The "...Hear at home what the artist intended with a Bryston SP4 theater." is very misleading. That's where you should be pointing out for customers wanting native high resolution they need to look to your SP3 platform.