I've still got the H||H IC-100S that I purchased new around 1975, had to hunt down a schematic and some filter caps and that's how I found these guys and have found them easy and pleasant to deal with, despite what the website may suggest
The HH is incredibly loud, guaranteed minimum 100W RMS into 4 ohms and through a Marshall quad box it sounded massive. Now runs through an 8 ohm 4x10 Eminence loaded box ( had a brain fade when I purchased the speakers )