From High-End Audio:

Update-Playing my Speakers "Full-Range"

Since I made some changes with the input impedance of the Coincident Frankenstein (and Dragon) amplifiers (by increasing it), I have finally been able to play my Pure Reference speakers full-range without the need for bi-amping and electronic crossovers. This just happened at the end of July, so I am still experimenting when I have the time and opportunity (no storms!). I haven't tried the Dragon yet, and I haven't played my most demanding recordings, but that will eventually come.

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