You are exactly correct, but it goes beyond what you mention. The electronics section aside, the mechanical transports are very important to ensuring how a piece will perform
The fact of the mechanical interactions and parts play a significant part in translating the information to sound. By the sheer fact that a $150 Sony (to use your example) single changer must accomplish much more than that of the single disc $600-900 Jolida (...again, your example) means that much less attention budgetwise is paid to the transport mechanisms. Add in the fact the machine must now deal with multiple discs, and how does a mfg'er accomplish proper rigidity when the costs are to be controlled?
Wishful thinking!
Anyway, the CD player referenced is a decent model, from a mfg'er who produced decent equipment. The original post was looking to make a lateral change of amps. He must decide if/what he wants to replace - and the features he requires.
