Hammer is an audio input tool for Propellerhead's Reason. It finally lets you route ASIO audio inputs into Reason rack for live processing: just adding a reverb, doing cool voice vocoding or guitar distorsion. Technically speaking, Hammer is a standard ReWire application. It hooks to Reason via the ReBirth Input Machine device so that creating such a device results in creating an instance of Hammer Device. Then, connecting the Hammer Input Panel opens the selected ASIO input and routes its signal into Reason's rack.