I didn't expect to be impressed by the audio performance of such a compact, lightweight speaker. At 120mm in diameter by 32mm tall, and just 230g (much of which has to be battery), I didn't think it would have what it took to fill a room with accurately reproduced sound. I was wrong. While the bass from the GroovyR is definitely tame, it covers the full range of sounds very well and there is absolutely nothing tinny about what you hear.