The original and still the best direct reflecting speaker out there. I inherited a pair of 301's or 401's (not sure...will have to look later) from my late father.
I think I'm going to put them in my workshop paired with my Pioneer CS99A's and the 150 watt per channel Marantz. That think is so loud with the CS99A's it could make your ears bleed.
Bose was a true innovator.