Can room acoustics amplify the sound of speakers?

I want to thank everyone who has contributed to this thread; I have learned a great deal about the electronics of op-amps. My walls are "not barking" at me yet as Davehrab noted about his back wall, but the shouting has not stopped. Two questions emerge from the responses to this thread. First, Why don't high-end audio stores encourage an acoustic evaluation of a buyer's room; surely, they could provide their own acoustic treatment service, or just sell the product on a DIY basis and create additional revenue, for themselves, especially in these tough economic times, Second, it would be interesting to find out how many manufacturer's rely on a "one chip" output configuration Davehrab suggested of the Rega Apollo. If that is the only cause,and not a combo of CD output design and not resolving the negatives of room acoustics. How many of us, just guess at acoustics, or assume that the overstuffed furniture in the living room will cure all the negatives. I can only remember once over 38 years of audio clearly hearing the difference created by two floor to ceiling bookcases behind both speakers that "dramatically" changed the sound.

I would like to contact Rega, and see how they respond to explaining this "problem" of an apparent uncontrolled increase in volume, resulting in a loss of clarity on dynamic passages. I am not sure I understand how Davehrab would solve the electronic problem of overloaded or overworked op-amps. How much could it possibly cost a manufacturer to eliminate this problem. I am sure buyers would pay a reasonable increase in retail to attain good sound. Jim