To me, that would be a single channel, cathode bias amp. I wonīt go saying "class a" cause itīs not.
Master, treble,bass, volume. I donīt need anything else, i even run the master all the way up, so itīs like itīs not there... Maybe if i need low volume iīll use that feature. Oh by the way, 35 watts. Thatīs way more than what i need!!!! i never played stadiums yet! :D