David, I differ with your finding, based upon several years of experience owning a Blowtorch. It has never been hard edged, simply ruthlessly revealing yet musical as it gets. You owned Avalon Osiris speakers when you had the Blowtorch for a few months, as well as either Pass X600s or Krell 750s, not sure what the rest of your system was. I won't dispute what you may have heard, but any edginess cannot be attributed to the Blowtorch. I have heard the Blowtorch vs. IIRC the Switchman, and the differences were apparent, especially in terms of dynamics, imaging and staging, and treble.
Brian
Brian

