I'm pretty fond of this cheap little thing from Radio Shack: http://www.radioshack.com/product/index.jsp?productId=2062620 It runs off a 9V battery or 9V ac adapter (not included). On Jan 22, 2008 5:39 PM, Jascha Narveson <jnarveson at wesleyan.edu> wrote: > Anyone know a good brand or place to look for powered mono speakers?