The bass amp is Class A/B in the Trident. I asSume you have a large room, hence the question regarding the Trident. It is best with an all Gryphon rack. However if you have other electronics, and want a semiactive speaker, then I think a cheaper option would be the Adam Audio Tensor series, exceptional value and nearly there. I deeply respect Rockport, but the question is about active bass section so I will stick to the subject.