Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great portable speakers for medium size room

I bought these to connect to my laptop when I do presentations that require sound. They fit in a tiny case that slips into my suitcase easily. Connect via USB to Win7 with no setup. Sound quality and features are EXCELLENT in a medium size room. If the listeners will be more than 25 feet from the speakers, I had to turn the volume up to the point where it distorts. As a result I use professional speakers in a large room and these in a medium room. They stand up vertically on a table using built in fold out stands which are great. they require no power cord. Only one plug to USB(from one of the speakers . . . the two are connected by a cord).