If I were you I would contact Pass Labs directly and talk to them about your dealer. I think it's ridiculous that you cannot audition these amplifiers. You're a proven customer. Does your dealer really expect people, particularly people who have shown that they are real buyers, to buy $10k plus equipment without seeing and hearing the product? It's even more outrageous that you're being so terribly disrespected after receiving a defective product. There's no way you should tolerate being treated so poorly!
Alternatively, for the price of the items you're considering the cost of a plane ticket to a dealer who has the items in stock and allows potential buyers to audition is not all that significant.
Alternatively, for the price of the items you're considering the cost of a plane ticket to a dealer who has the items in stock and allows potential buyers to audition is not all that significant.