GaN-based Class D power amps
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The Lyngdorf is not GaN. Saw this on Widescreen Review, “ The output section of the MXA-8400 is a completely new electrical Lyngdorf Audio design based on the optimal use of NFB in audio amplifiers. NFB is an arrangement in which an amplifier is made to respond to a fraction of its own output signal in opposite phase in addition to the normal input signal. It effectively reduces distortion and increases linearity.” |
I thought it was a taboo to use negative feedback in a class D design. But then again, I am not so certain that this Lyngdorf amp is a class D amp in the first place. See this post in the link below from one of the principal designers: https://www.diyaudio.com/forums/class-d/333672-breakthrough-dd-amplifier-3.html |
I thought it was a taboo to use negative feedback in a class D design. Nope, it’s inherent in a lot of Class D. It doesn’t work quite the same way though. Some uses local feedback, which does not include the output, and some do. Feedback and a triangle wave oscillator is how the analog input is converted to PWM output. |
