The Eclipse can measure all types of Auditory Evoked Potentials (AEP) and Otoacoustic Emissions (OAE). It performs all tests from a single, high performance hardware unit connected directly to a pc, laptop or workstation. The Eclipse offers different software modules, enabling the assembly of the exact tests needed for the office of today and tomorrow. All modules have similar interfaces, making the whole system easy to learn and easy to use. The EP25 module measures and analyzes the full range of auditory evoked potentials within a 980ms response window. The EP25 module includes everything in the EP15 module, but offers an advanced auditory package including ECochG, VEMO, ML, LL, P300 and MNN - each with dedicated filters and marking software. In addition, an easy to use Cochlear Implant stimulator control is available for electrical generated ABR tests. The EP25 module will run automatic test routines, and test setup examples come pre-programmed with the instrument. A wide variety of stimuli include clicks, tone bursts, variable envelope selections and masking including stimuli and recording parameters for VEMP. Unique features also include automatic wave marking, waveform reproducibility indicator, digital off-line filtering and a patient talk forward function. For all modules available for the Eclipse, patients test results go to a common database with printable reports in paper form or shared electronically, and is Electronic Medical Records (EMR) ready.