I was looking for an extra enclosure to my laptop, which can also be taken on a journey, connected to a mp3 player. I am not disappointed: - Excellent sound for small volume particularly thanks to the bellows that gives low - Rechargeable battery via the USB cable supplied - A handy carrying case Obviously, you will find more power and quality in home theater or subwoofers systems, etc. but for a transportable chamber, very low volume, quality is amazing. AND then the price is very reasonable.