Tvad: I agree that proprietary parts aren't manufactured but the processor you see in a high end player this year you might see in a lower end player next year.. Most of the high end products spend their money building multiple powersupplies and trying to isolate the digital from the analog ...
Economy of scale would also dictate that the high end players are hand assembled due to the limited quantity sold (wouldn't make sense to tool up a factory to kick out 100-500 units..)
Economy of scale would also dictate that the high end players are hand assembled due to the limited quantity sold (wouldn't make sense to tool up a factory to kick out 100-500 units..)

