I have them from 4 months. I had doubts during listening and then I paired them with C1100. That was the key to heaven. Those two was meant to work together. Both are state of the art, class in its own. I wish I did not tried 611 in this combo but 1.25 looks like hell also. You do not have to change C1100 tubes even, no need it sounds great from the box. Huge, dynamic and delicate at the same time sound that has the ability to punch you from the ground or seductively whisper. I found that I have to give a chance to my old recordings that sounds to chaotic or not interesting. Even tho my listening room is not perfect (too small) each sound has its place. The vocals are so real and express so much texture that act as an instruments as well. Recently I feed my rig with PS-20 regenerator. The is improvement of course but mostly from CD and DAC side. 1.25 and 1100 seems to be solid states for its own. I keep them connected for additional security in-spite the reseller assures me the 1.25 has triple protection. I simply fill I got golden egg I have to keep safe. It really sound so fantastic. Try them together and forget the call of change. They brought peace to my heart.