I can't wait till the last post to comment on audioking, but who the he(doublesticks) is he to order the company around like he's ...well y'know.
The X7 is done, they're probably building them now, so there's no point in barking about how it looks or functions anymore.
And, if I was tuning a piano and the customer was telling me how to do my job, I'd walk out on him.
And that customer would never use you again, and never speak well of you to another consumer. Imagine the lost potential sales!