Hi Jax, it's a difficult thing: does the Benchmark sound as you described it because it is a very analycal and honest piece of hardware or does the Wavelength make music more palatable by softening the transients somewhat? I think the question is: which of the units comes closer to the sound of the master tape?
I'm not in the camp of neutral and accurate, analytical, honest, nor do I care about how the component brings the sound closer to that of the master tape (if it does, that's great, but it's not what floats my boat on face value). I care about how the music sounds coming out of my system in my room to my ears. I tend to like components with a boost in the lower mids, or on the warm side if you prefer. In the case of the Benchmark I did indeed feel that it did fit your descriptors (and my additional ones above). Perhaps some of my lack of enthusiasm for it came from that squeeky clean, sterile feeling. But I'm sure that 90% of why I didn't like either example came from the strident highs. I'm totally open to the idea that it could be something system dependent, though I did try it in three different systems the first time (2 tubed amps and 1 SS amp), and more recently in two different systems. Could be cabling...could be the rooms (several involved first time, only one the second), could also be break-in in the case of the latest as it was new and I probably only put about 200-300 hours on it. I did have a few friends come by each time and compare with the other DACs and my observations were mirrored in the first instance, and not quite so strongly in the second. I heard the Benchmark USB sounding outstanding with no such stridency in at least one room at RMAF, which would lead me to think it has the potential to do just that. Sadly I could not get it to perform as I heard it with the resources I had on hand. As far as your descpription of how The Brick made the music more 'palatable' - I did feel that DAC was indeed softening out the music, but I do not think that is simply because of the tube output, or rather I think there are implementations of tubed outputs in DACs and players that do not overly soften transients. Notably the Paradisea + I use, and even more so the Modwright player with tube output I use render remarkable detail, soundstage and clarity. As I said, I did not mean my comments on the Brick to be a necessary reflection on the Cosecant. I would imagine the later is a superior implementation of the technology, but I have not heard it so could not comment. Hope that helps clarify my observations.