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Hello, The system: MacMini with Audirvana DAC LessLoss 2004 Pre-amp Nagra PL-L Power monoblocks Nagra MPA Speakers Vivid Audio V1.5 Subwoofer JL-Audio F112 (with dedicated power line) The problem: Even though these are all high-end components with an amazing resolution and a sound I love, I'm fighting with the fact that the system's performance is being very limited by my current living room. I tried several full range speakers and they all had serious bass problems. Apparently my living room is the culprit. So I decided to go for a pair of monitors and a good subwoofer with room calibration. That kind of made it bearable to listen to music there. But still... my system doesn't sound relaxed. Thanks to the subwoofer my main problem is now with the higher frequencies. I find that when I start raising the volume, the music quickly becomes tiring and confusing. So I end up avoiding music with lots of dynamics or feel tempted to start lowering the volume. But this is not acceptable for me. An acoustics specialist went to my home and after measuring the living room, said its proportions are very bad for listening to music. He said the first thing to take care of were the first reflections but I have a window on one side and a sliding door on the other, both right where treatment should be applied, which makes it a hard case. Still, he said I should install diffusion panels on the back wall and on the ceiling. I'm very reticent to invest so much money into something which will have a serious aesthetics impact and without the possibility of testing it. The salesman is suggesting that I buy Amarra iRC saying it probably solves a good part of my problems. But not only I'm fond to Audirvana, I also don't like the idea of being stuck to Amarra. And then I heard about Dirac Live. The questions: 1. How much of this will Dirac be able to solve? Will it reduce the impact of first reflections for example? 2. Won't the Dirac algorithm reduce the quality of the result (detail, etc), since it's transforming the information? 3. Would it still be advisable to put diffusion in the back wall for example? (I consider putting it in the back wall, but I really would like to avoid installing it in the ceiling, even though I hear it's much more important there) 4. Will Dirac Live (2 channels) work fine even though I have a subwoofer or will I need the full version because of it? 5. How will Dirac's room correction relate to the subwoofer's room correction? Should I turn of the subwoofer's room correction? Thanks in advance! Nuno