The Krell build quality is where all of the money is when you buy it. All press break formed aluminum with floating nut plates for everything attached to it. All stainless steel machine screws NO sheet metal screws. The front panel is a big 1/2" chunk of machined aluminum. The output relays are massive 4 pole pieces as is the turn on current limiter relay. There's a big 50W Dale chassis mounted resistor to slow down the cooling fans which run very slow. I did the math and the resistor is dissipating a whopping 4W. Everything about these amps is just built for the long haul.
Craig
Craig