For some people, a key part of going to outdoor music festivals is to feel the bass thumping out of the loudspeakers. If that's just not enough for you on its own, however, you might be interested in the Baserock backpack. It amplifies the bass of ambient or direct-line audio, and sends it coursing through your body – plus it'll keep you hydrated.
The Baserock incorporates a mic that can pick up live music, along with an auxiliary port that a smartphone, portable music player or portable speaker can be plugged directly into. In any case, the bass frequencies of that music are pumped into your back via two 15-watt tactile transducers driven by custom amplifiers – the intensity of the vibrations can be adjusted using a knob located on the shoulder strap.
One charge of the pack's 11.1V/2,600mAh lithium-ion battery should be good for a claimed eight hours of use. And yes, it also has a 2-liter hydration reservoir with a drinking tube. There are additionally two large storage pockets and five secure zipper pockets, for carrying stuff other than water.
If you're interested in getting one, the Baserock will be the subject of a Kickstarter campaign beginning on June 13th. A pledge of US$199 will be required to get one (assuming it reaches production), which is half of the estimated retail price.
Potential backers can register their interest via the link at the bottom of the page.
And if a backpack is just too big and cumbersome for you, you might want to check out the wrist-worn Basslet.