I have a feeling I already know the answer but looking for reason to change my mind. I have a pair of PSB Image B5 bookshelf speakers (orig $400 pair) that are doing nothing. I am thinking about getting the amp to drive them. The alternative would be a single Play:5 (for the same money). I really love the sound of the PSB's with the exception of weak bass, which I expect the Play:5 to have more of. But I've never really heard a Play:5 in a "proper" environment to really hear what they sound like. If I'm trading a bit more bass for less clarity and detail I won't do it. I'm leaning towards the amp.