Expanding a 2-channel system to surround

I have a Krell kav-400xi integrated amp that has a "home theater throughput" mode. This mode basically bypasses the preamp section and allows usage as a 2-channel power amp.

Are there any cheap(ish) home theater processor with a 3-channel amp? I am just thinking of adding small satellite speakers for the center and back channels, so I don't need anything particularily powerful.