Goal Zero, who specializes in solar power on-the-go, brought to market last year the Goal Zero Rock Out portable speaker (MSRP $39.99). We've all had portable speakers at camp or in the backyard that don't pack much of a punch. The Rock Out's wooden sound box kicks out a full range of sound from bottom end bass to the high end frequencies for a clear sound that carries. The Rock Out is completely portable weighing in at 14.4oz, and it is compact enough that it should make it on every weekend backpacking trip.
The Rock Out will connect to any mp3 player or phone that has an external headphone jack. The speakers have their own internal battery so it won't drain the battery of the device in use. The Rock Out also is completely rechargeable, meaning you'll never have to decide on whether to power your camp stereo or headlamp. The battery can last up to 20 hours based on the amount of volume you're pumping out. The battery can be recharged in two hours through any USB source or connected directly to the Goal Zero Nomad7 Solar Panel for anyone who will be out over longer periods of time.
One of the best features when using this around camp is the ability to hang it from about anywhere. Once you have your Ipod or mp3 player in place, you can zip up the Rock Out, sit back and enjoy your favorite tunes for hours on end. Along the back, there are a series of bungee cords that allow for an array of options whether it be a backpack or mountain bike stem.
Overall, the Goal Zero provides a unique way of keeping music with you everywhere you travel. The compact and rugged design makes it suitable for the toughest of wilderness weekends or just sitting around the deck on a summer evening.