Anyone heard the Kinergetics KBA-75 amp??

I agree with Blue Swan. I've had mine since early 2010. Only problem is the big red power switch (this is the original KBA-75 which I refer to as the gold one since the second model of the KBA-75 is called the platinum.) The switch is still available, but it failed again. Since I know electronics I put in a heavy duty black 20 amp toggle switch and so far so good. A few hints. 1) check that the fan is running or it will die. I put one layer of tissue paper, taped at the top near each exhaust port, so it blows when the air is coming out. Every one in a while I check that  2) Make sure all of the fuses are the correct amps and type (fast blow or slow blow)  3) I think there are other last chance fuses inside on the boards  4) never mess with speaker cables with it on - I think an output short would be deadly 5) unplug it during a thunderstorm - the power supply is on standby when the switch is off

i have 2 and they are great amps -= i have even driven apogee scintillas with them -

I have an original one I purchased in 1987. It is 75wpc pure class A and fan cooled. It has a large torodial transformer and 11 power transistors per side. I used it daily for 13 years to drive my Maggie IIIAs and it still works great. It listed for $1700.00 back then and I easily got my money's worth. It is a lot more powerful than the specs suggest. It is very clean and the dynamics are stunning.