Has anyone heard the Usher Threshold R 1.5 amp?

I actualy own an R-1.5 and using the usher p-307 pre-amp with its own power supply.
The reviews ar bang on for this combo, they work in great symbiosis together,a good complement.
great dynamics with a unfatiguing sound, very tube like in its presentation.
The sound is detailed from top to bottom, its a very good combo for the price.
I reccomend an audition for anyone searching separates in the neighborhood of 5500$.