Has anyone used Portal Paladin amps?

They seem to offered a lot for sale as new. Any history
would be helpfull.

200 watts of high bias A/AB power @ 8 ohms
True differential fully balanced design
16 high speed/high current bipolar output devices
Balanced and single-ended input
Selectable input impedance for ideal matching to
both solid state and tube preamps
800 VAC toroidal supply, capable of producing twice the rated power for extended periods
96,000 MFD of filter capacitance
ultra fast, ultra quiet