There are many kinds of MIT cables. I purchased the Oracle v2 speaker wires because, at the time, I was driving Thiels with Bryston amps. The upper range sounded far too etched for my tasts, though the detailing was fantastic. When I switched to the MIT's, the sound was far smoother without losing any details: The harshness and sibilence went down. I am still using those speaker cables and am not missing a thing in the upper registers as far as I can tell -- and the adjusted Radio Shack frequency responses further bear that out. In short, my experience has been that the MIT's smooth out the high ends without rolling them off or affecting detail. But ... as you know, every system is different as is every acoustical environment.