In one aspect, the invention relates to a method for pre-fetching an audio signal for a user. An input device may comprise a touch sensitive surface. A bias level of the input differential signal may be adjusted to an optimal bias point of the second stage. The reclaimed elastomer material can be subjected to shear in the presence of a modifier which selectively promotes the cleavage of inter-chain bonds in the reclaimed elastomer material. The hydrogen and borate product exit the reactor and are deposited in a hydrogen separation chamber separated from the fuel chamber by a moveable partition.