Kit -The Wave, Analog Tube Driven Spring Reverb The Wave is a versatile stand-alone, tube driven analog spring reverb unit kit It can be used in front of your guitar amp or as a line-level analog reverb effect for the recording studio Two controls allow you to serve up a wide range of wetness from just a touch to over the top psychedelia The "dwell" control adjusts the input signal level driving the tank and the "reverb" control adjusts the level of output reverberations from the tank. The Wave's all tube design utilizes four dual triode vacuum tubes - three 12AX7s and one 12AT7 - and comes with a MOD three-spring reverb tank