Crate produced a genuinely genius product: The Powerblock.
Less than 10 lbs, over 100 watts, could be run in Stereo, and didn't sound terrible. It was a gigging musician's answer to prayers for an emergency back-up amp, and if you live in a city where you take mass transportation, it solved so many logistical problems that it was worth it's weight in gold.
Seriously: the Powerblock was a stroke of genius.
What did Crate do?
They discontinued it.
I remember reading about that. IIRC, it would also handle wildly fluctuating voltages from like 90 to 140 volts, just in case you wanted to play in the middle of a lake or on top of a mountain with sloppy generator power or some such...
Discontinued....