looking for a Integrated amp $6,000 range

Yup, I remember that ad. So, it's not impossible, it's very difficult.

Finding Gryphon Diablo for $6k must be impossible.

Well, I just have one piece of an advice for anyone considering transistor equipment. If it is within your reach financially, do not buy anything before hearing Gryphon. You might eventually choose another brand, including one of Swiss brands, but Gryphon has to be auditioned.
$6k is not much, so..

Luxman/Accuphase, are they full of Chinese parts ? Hegel must be too.
Not Gryphon, as far as I read. You won't see many Gryphons for sale, especially Diablo 120, not that they make many. 

Gryphon is a top level brand. Higher than Coda, Pass, Rega, Parasound, Rowland etc. Problem is cost.