SOLD!!! This is the SWR classic, the exact same preamp and controls (including the semi-parametric eq section) as the Groove Tubes preamp and the SM-400. This head will work great if you are looking for something that can handle small to medium gigs in a lightweight package. It will also double as a great tube preamp...it has plenty of connection options on board! It puts out 220 watts into 4 ohms. Mine is in excellant condition, looks brand new! It was recently serviced, and all the knobs and sliders are VERY smooth. I need to figure out how to post the pics here, but in the meantime you can shoot me an email for pics. If you want to see more information check here - http://www.swrsound.com/support/manuals/html/st220om.php I need to move this fast, so I'll sell it for $180 including shipping in the continental 48 states!