Summary: Believe the magazine reviews. The Alpha B1's (mine driven by a Yamaha RX-497) provide sound for my home office. I had suffered with another inexpensive speaker for several years and found myself simply not listening. One of the main reasons people like PSB speakers is they don't get tired of them. Many other speakers have characteristics that catch your ear to begin with but become unpleasant over time.
Summary: Great for medium sized spaces. Bass extension is surprising for a package so small. The midrange is superb. I traded in a large set of Polk Monitor 70's for these - which were huge floorstanders that were much more expensive. These PSB's put them to shame. Great musicality and articulation. I pair these up with a Cambridge Audio 540C CD player and Rotel 1062 Amp. The speakers are mounted on a set of 28" Bowers and Wilkins floor stands.