Hello all, I've been checkin' out some reviews of these heads and the majority of them are negative and say that the head has quit or went up in flames !!! I currently own an SWR Workingmans 4004 to power my Workingmans Tower and I've been trying to decide on a new amp and saw the GK 800RB and thought, "That's exactly what I'm lookin' for!!" until read those reviews, so I thought I would ask you guys . Anybody got any praise or horror stories with these amps.