End user configurable user interface for device test system with user interface elements appropriate for the device under test

An evaluation system monitors and controls a device under test. The user interface of the system displays controls for the device, which are appropriate for the device under test. These controls may include sliders to set numeric values or toggle buttons to set single bit values. The user interface is constructed from pre-configured user interface elements. The user interface may display a number of different controls, which are mapped to different registers in the device under test. The mapping and the layout of the controls may be defined using a configuration file written by a test engineer. The device under test may be an audio filter or an audio codec.