Really, there's no way they broke 90. Last one of these I heard sounded like it was, at best, high eighties, maybe 87% max. What if...the speed of signal propagation is 91% SOL in one direction, so with a directional cable, if you switch directions, wouldn't it be 109%, which makes up for the loss in the other direction? So the electrons actually time travel. So, if you look closely, the tubes will begin to glow, a few seconds before you switch on the amp. Right? Woah.