Hello folks. I am thinking about purchasing a tube head. Has anyone had failures with their EBS T90? EBS marketing leads one to believe the T90 OT is over engineered making it more reliable and (powerful?) Does anyone know if this is actually true? I have not tried the T90 head yet but will this week. If it is powerful enough I intend to use it through my current 8x10 for most of our gigs but I seldom need the power of the SB300. It seems like the verdict is still out on the 100T autobias. Any thoughts appreciated.