I have tried and owned several Bybee products for my Audio system. I do find the Omega E Mat to have a greater positive effect on my music enjoyment.
Like several other posters on this thread , I have found the Mat to improve the sound over the course of several weeks. I also agree that several Mats placed in a system adds progressive improvement.
Over the course of the last two years of careful equipment evaluations, I have found that major audible improvements can be obtained with upgrading to Synergistic Research Blue Fuses, Synergistic Research wall outlets, Total Contact, and finally and importantly the Omega E Mat.
The magnitude of improvement using these devices is significant and is greater than when I switch out my Pass Lab Amplifier for the Art Audio Tube Amplifier.
David Pritchard