Sir... do you think its going to be sellable?
I think it will, but it would depend on the pricing. You'd also have to have a setup that would mirror the actual projected user of the amp. Which means you may have to setup a listening room with a computer (say, a macbookpro or an Imac, with the amp's DAC getting input from the optical output of the headphone jack of the iMac or Macbook, or connecting it to the optical out of an Airport Express wirelessly streaming from a laptop).
A traditional audio setup would do, but it would face stiff in-house competition from the lower-end NAD products that you have. The peachtree would likely face limited appeal from the Cayin/NAD clients. . .
Just my 2 cents worth. . .
I could volunteer to test a unit. . .hehehe, since I have a wireless setup at home, with my laptop playing 320kbps AAC files to an Airport Express, and with the latter's optical output feeding an external NOS DAC, which is exactly what the amp will be substituting for. And I'm even running them through a tube amp and via Castle speakers. So, you'd have an amp and speakers that are from Audio Amplified. . .
Just a suggestion though. . .