Unlock a new level of audio experience with DDFA amplifier technology.

Qualcomm® DDFA™, our breakthrough digital audio amplifier technology, is driven by innovation and over a decade of R&D to help you create superior consumer audio experiences in digital speakers and soundbars of virtually all types. Setting a new benchmark in audio quality, our Direct Digital Feedback Amplifier (DDFA) technology is designed to help you innovate and deliver the ultimate in amplification technology to more consumer audio devices than ever before.

High-fidelity audio and design flexibility

DDFA technology—based on a unique closed-loop digital architecture—is engineered to combine the power advantages of class D amplifiers with the high performance of traditional linear amplifiers. The result? Near-perfectly balanced efficiency and audio quality designed to deliver a superior listening experience.

Advanced DSP features

In addition to a patented core architecture, next-generation DDFA technology is designed with an advanced configurable DSP, which helps provide comprehensive control on the audio path without relying on an external device. With support for 32bit PCM up to 384KHz and DSD64/128 input, integrated high-resolution interpolation filters and equalizers, DDFA helps devices be compatible with today’s high-resolution trends.

Outstanding audio performance

Performance across the audio band

A unique and patented digital architecture is designed to deliver industry-leading audio performance across the entire audio frequency band:

  • SNR and Dynamic range > 113dB (A-weighted, 20Hz to 20KHz)
  • THD+N < 0.005% (20Hz to 20KHz)


Closed-loop operation and high-resolution DSP help maintain audio performance consistency:

  • Distortion does not increase at maximum volume
  • No audible noise or hissing sound
  • Performances are maintained across a wide range of audio input formats

Get started building with our audio solutions.

Get started building with our audio solutions.

Qualcomm DDFA, Qualcomm Smart Audio Platform, Qualcomm CSRA6620, and Qualcomm CSRA6640 are products of Qualcomm Technologies, Inc. and/or its subsidiaries.


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