Has anyone on the Forum hired an expert to adjust room acoustics to your room, or make adjustments to optimize the sound quality of your system? Did you find it was a great success, or a waste of money? Tomorrow, I have a person coming over to adjust the built in equalizer on my Classe Processor. He will set up a microphone and analyze the acoustic signature of the room. His computer sends out a full frequency sound burst, which is analyzed by the computer. On the computer screen, you can see the graph of the full audio spectrum of the room, and identify exactly the frequencies that are interfering with room acoustics. The SSP allows an adjustment of the exact frequency. In my friend's home theatre last weekend, there was a problem at 40 Hz, and 91Hz as well as some higher frequencies. The SSP-800 has an equalizer built in that can adjust up to 5 frequencies, to help minimize or remove bass nodes or other interfering frequencies in the room. My understanding is that the processor will recalculate the music at the specific frequencies that are interfering. I watched this same exercise being done at a friends last weekend, who also has a Classe SSP-800. I thought the improvement was dramatic, and he has a purpose built Home Theatre. I was surprised how much of an improvement it made. Each to their own but I am surprised to read you using an equalization. Used these in dance halls