Is the ADD51T that poor of quality that it will take away from the quality of the Audison amp.
Yes. I'm surprised. Spend all that time and money to research amplifiers and speakers, then nothing to research the processor? Audiobahn is regarded as the biggest knock off in the industry. They never come up with their own ideas, they always mock other companies top selling items, they hardly put any research into their own products, they use incredibly cheap parts and are built the same way.
See my sticky at the top of this forum for processors. Those are your options.