I have one Blackbody located on the wall behind my AMR CD77.1. I was very suprised with Bazza's comment about locating them facing north. This happens to be the orienatation of mine and where I found the Blackbody gave positive results. I have no idea why this should be so, and perhaps it is just co-incidence. I would have to concur with the findings of the posters above in general. It is one of the few ' tweaks ' I have found without the presence of a downside, such as skewed frequency response. The soundstage is simply more open and clearer in all directions. Within that soundstage, details are clearer and hence one is drawn more easily into the musical performance. A sort of unforced naturalness is present that makes music sound less digital and more like music. One gets the impression that some sort of electronic grunge is being cleared away. The nayesayers are typically those that have a closed mindset and unwillingness to accept anything that challenges the boundaries of their belief systems, claiming science is on their side when the reality is it is just scientific bias. An open minded individual may correctly voice skepticism, but reserve his judgement until he actually hears something for himself. Whether one is prepared to do this is a personal choice.
For my part, I found that most claims made by high-end dealers and manufacturers are exagerrated or fundamentally flawed. This comes from 10 years of serious investigation and exploration of cables, resonance control, AC power delivery enhancement, stands and components themselves. I treat anything that most paid reviewers write with the greatest skepticism, or for that matter even private reviews. This comes from experiential knowledge that system and system/room interactions have a profound effect on outcomes. Value for money will be a personal judgement, even if the system interaction is positive. I chose to keep the Blackbody because I liked what it did. However, I don't think it is for those that have not already reached a satisfying level of transparency to source in their systems. It won't correct serious system deficiencies and colourations, it simply expands upon what is already there. The more well tuned and transparent the system is, the more clearly the differences will be heard. If you find the sweet spot, it is difficult to be without it.