The Nuance Select is able to deliver remarkably low distortion and transparency through its patent pending Clarity Circuit. Every aspect of the Clarity Circuit was designed with an overarching goal of keeping distortion to an absolute minimum, so you can hear every detail of the mix without compromise. The Nuance Select uses 100% Class A circuitry (including the headphone amplifiers) to eliminate zero-cross distortions that are inherent to Class A/B op amps, and an ultra low noise internal power supply is also employed to further reduce the overall noise characteristics of the circuit. A true stepped attenuator is employed for the main level control, which is formed around a 21-position gold contact switch and paired with a string of carefully selected precision resistors. Last but not least, the Nuance Select has zero capacitors in the audio signal path, as these can act as high pass filters and cause additional distortion: in their place DC Servo’s are used throughout the signal path. The overall result is a level of Total Harmonic Distortion (THD) that is so low it is difficult to measure – 0.00001%.