Just wondering if anyone has owned one of these beauties. I had to get rid of my HBP-1 a while ago that ran through a stewart 1.2, which I loved, and now I am thinking getting the hybrid amp. I always replaced the preamp tube in my hbp-1 with a good NOS tube for pure Tubey goodness makes a huge difference because the pre is so transparent. It will be running an accugroove Tri112L most of the time, and occasionally two of them. I found that I almost never ran the stewart more than half-way, to give you an idea of the power I usually use. Anyone ever played the HBP 600 through an accugroove cab? Please share your thoughts on what I am sure is a great product. Any thoughts on the tone and power, pro/cons of the hbp 600 would be appreciated!!