The Amplitude T-Series by Otovation offers a unique concept in audiometry. The T-series audiometers are available in two models, the T4 for air conduction testing, and the T3 for air and bone conduction measurements. The T3 model is wireless, and is easily connected to a PC. Being wireless, the T3 affords the maximum possible flexibility in the positioning of both the tester and the subject. The models operate over the range of frequencies from 125 Hz to 8 kHz. Signals can be presented as either a steady or a pulsed tone. Tests can be conducted manually, or they can be automated using HughsonWestlake parameters and procedures. Both the T3 and the T4 are ideal for use in hearing instrument fitting and hearing health studies, as well as for other specialized uses.