I think their Timepiece Mini's will best the C1's in bass response and dynamic range.That could be, but my C1s deliver remarkable bass for their size, down to 30Hz or below in my room, and they may be the most dynamic speaker I have owned. I love them for their tone, which no one seems to talk about, which I find nearly spot-on to my idea of what is neutral and correct. Have not heard the SP Techs but would very much like to.