Has anyone heard the Usher Threshold R 1.5 amp?

i own this amp and am using it with a belles 21a tube preamp. the midrange is wonderfull, highs are clean and natural with tight bass. while it is not true class a it will warm up a mid to small room, my room is 12x15x8. it is dynamoc amp and i have to get it to run out of steam.

before the usher ihad the denon pma-2000ivr integrated used as a power amp with dodd audio entry level tube preamp.