maybe a bit late here, but i have owned the Sumo Nine. reviews i've read about the Andromeda have not been good, but the Sumo Nine is a well regarded, if quirky little amp that makes a nice sound. can be a bit tiring to listen to, but if you like detail then you will be in heaven. it'll double it's output into 4 ohms, so there's plenty of juice. i enjoyed mine for some years before upgrading. definitely recommended, but if you need it serviced...
