I have been testing one mat for just over two weeks. My system is already completely treated with the TC paste for some added perspective to the reader. I love that paste! For my rig and room the mat has been a mixed bag. I placed the mat under my Lyngdorf 2170 powered dac/int amp.
At first the music became a tad brighter with the music more energized and individual instruments more apparent. Over time the brightness went away. No doubt the mat makes for a more vibrant presentation. However, with the good came a sense that it was too much of a good thing. Too much vibrancy if you will. I removed the mat from under the 2170 after 10 days and placed it in the breaker box. After some 4 days here I just did not notice as much change and bailed on that position.
Right now it is back under my int amp and that vibrancy is back. Exciting and certainly different, but I am just not sure if I like the sound change (long term listening) or am simply amused by it? I will give it another week before my final thoughts. Thus far the additional energy, vibrancy and presence the mat delivers is perhaps calling too much attention to itself for my taste and particular system. There is no doubt just one mat has an influence on our gear and resulting music. On one hand I like like it, then on the other I am just not sure.