I think GK may rate their amps conservatively . that is :800 watts into 4 ohms. RMS ,continu us . But I have the regular 700w amp and built a wooden box and painted it blue. I would only save around 20 pounds. Still, I will go digital sooner or later . I have 2 Superfly amps . They are pretty and sound like about 200 watts into 2 cabinets ( 4 ohm cabinets )
I mean 100 watts on one channel and 100 watts on the other side. They have a nice pre-amp.