Anthony, I have really nothing to say on this as I do not have this unit. The gentleman who made this video sound quite reasonable, and it is highly possible that everything that he says is accurate. Methodologically however, I feel that direct a/b comparing between two or more devices is very demonstrable but not necessary a very objective way to observe the differences. Again, no criticism what he is saying. 

Another interesting point. As much as I hate digital processing. I need to admit that when Bill's system sounded in his best. I did not detect issues that I would attribute to bad digital sound. Could it be better with different DACs? Only God knows as it will be completely different system. I do not know what version you have but since you going to be running only your surround channels from Ternov I do not think that you need to lose your sleep.

With all honesty yesterday I did not detect in Bill's sound any deficiencies that I would feel a " better" Vitavox 15-in drivers would address. This whole concept of battle driver is complicated. Russians have saying: if two people do the same things. Jane, they are not the same things. The very same tru in yhe most audio applications. We made his base horn run down to 45 cycles and it was very beneficial to listen his playback without any lower frequency channels. His horns did beautifully and I do not think that if we have " better" driver in horns if it would make any difference. From what I feel vitavox 15 in driver not necessarily like to be squeezed in a horn. I personally very much like it as a direct radiator or in very lightly loaded horn. I would not use it for any hyperbolic or any other slow opening horns. 

Whatever was very remarkable yesterday is that Ternov become very substantially screw up sound when we changed main volume control. It happens that we listening his play back at 0db and it provided fight fine result. Then Bill to demonstrate me somthing and flipped The volume at -1 DB. I swear to God that sound instantaneously got collapsed. It's immediately got compressed and it was very editable. So if you plan to use this type of the processor for anything more than surround channels then I would run anything as much as possible at unity gain.

I know exactly how people feel after visits to "someexpensive audio installations". However, the reason because I become so verbal on the subject because I would like you to estimate yourself the accuracy of your fillings. You are running home a playback system which is significantly more advanced topologically than most of "visits to some expensive audio installations".

Now, he is a homework to everybody. How methodologically accurate somebody like Anthony could make a judgment about presumable advance his system over other, if Anthony willing to single point vitavox products. I have no doubt that his system has a lot of advancements over others but how he, or anybody else can make a judgment that it is vitavox but not the significant number of other topological investment that his playback has?

It is not so simple question as you think. I personally feel that the Vitavox probably the reason number four or five. In addition to the homework above, feel free to propose what might be considered reason one, two and three...