This is a home-brew pair of 4-1000s. It was completed in late 1999 and was 2 years in construction. This amp is capable of 6 kW output, but I always run it conservatively at about 1200 w output. It has a power supply which can run from 3.8 kV to 8.5 kV at 4 amps. The amps operates all Ham Bands 80 through 10 meters.