I use the Rocketfish to run speakers in my kitchen for music (signal is sent from a receiver in my living room) - works pretty well on a small set of sony sb-1000s - however, it does pick up interference from the microwave (no surprise), but other than that, its seems to have plenty of power to run a small set of speakers
...and on a plus side - if we want music out on the deck, I simply unplug and have to move only two small speakers and the small amp