I played a Streamliner 600 through a Genz-Benz Uber 410 @ Chuck's Washington Music Center with a Smith (no Alembic avail. there) and I was pleasantly surprised. I am a fan of Mesa's tube amps. I have and have had several tube pre amp hybrids. The smooth low end and the voicing were much better, IMHO, than the Shuttle series. I moved around the bass area to hear it from several angles, even from behind and found the full, rich bass very pleasing to the ear. Now if only the wife could hear and feel the bass as I do......