As part of the AVA group, I do my part getting the mechanical drawings done, and getting the quote process going. We try to design products that are design friendly and very matrix oriented. As you know, we have basically 2 chassis that all of the product is built on, incorporating all the holes, and features needed for any of the amps, preamps, DACs or special function devices to be built on. This was not done over night. It is a continuous process of engineering (based on meeting customer needs and wants), that keeps pushing the design. Yes it is getting very, very complicated as time goes on, but everything has it's place.
These are some of the practices that are done to keep the costs down. That is why also each unit is built at order time, to keep dollars for material and labor from sitting on a shelf, which the consumer pays for even if he doesn't know it, with other companies.
For those that have worked in a manufacturing setting, I think you know completely what I'm talking about. To others, I don't expect you to understand, but running a company foolishly costs the customer money in the long run. Inventory must be balanced. Designs must be nothing more, nothing less then what the customer expects, and last (tho there are plenty more reasons), try to build in upgrade-ability.
That is one of the true values of AVA. Upgrades can be had for reasonable prices that bring the owner right into the state of the art.
Wayner