Death By Audio - Reverberation MachineThe Reverberation Machine is a synthetic atmosphere creator. Use the effect on any instrument to add depth and simulate different environments. Experiment and combine a variety of settings to obtain the perfect ambiance for your sound. Vol: Controls the master output volume. Altitude Control: This is similar to gain. Turn it up to bring in a more wide open, distorted sound. Verb: Blends in the amount of reverb. Dark Light Symbol: Dark cavernous