Buggtussel Tegmentum Subwoofer

If you currently use or have auditioned the Buggtussel Tegmentum subwoofer, I would appreciate your thoughts as to its performance. Is it applicable to both two channel and home theater? I realize the company is out of business but I've been interested in finding the Tegmentum due to the bass performance of the Buggtussel Amygdala I once owned.
I heard the larger mono sub that sounded excellent but it was very large, not sure if this is the same model you mention here.