The Tio1608-D inherits the natural, musical sensibility that we pursued in the development of the TF Series. Mechanical construction, circuit board layout, power supply, grounding, and parts selection have all been executed with meticulous attention to detail and quality, combined with exhaustive performance and listening tests at each stage of development. The Tio1608-D features the same recallable D-PRE microphone preamplifiers as the TF Series to provide a consistent, natural, musical sound throughout the entire system.