Direct Digital Feedback Amplifier (DDFA™) technology enables switching amplifier solutions capable of producing a sound quality to challenge that of the very best linear amplifier.

DDFA describes the unique, exceptional performance, closed loop architecture of these amplifiers and is the new preferred term for the designs replacing the previously named Class Z.

Comprising a multi-channel digital modulator (ZXCZM800) and a feedback processor (ZXCZA200), the Zetex DDFA chipset combines with Class D output stages to create high performance amplifiers achieving a THD+N of less than 0.004% and dynamic range of 120dB.

The scalable architecture of Zetex DDFA audio amplifiers suits a broad range of power levels, significantly reduces cost and dramatically simplifies system design