Class D is superior in efficiency and, in its best implementations, can provide comparable or better sound quality to AB.

High-end Class D amplifiers offer audiophile-grade, transparent sound with extreme efficiency, often rivaling or exceeding Class A/AB performance through advanced technologies like GaN (Gallium Nitride), Hypex NCore/Purifi, and Pascal modules. These amplifiers provide high power (1500W+), low distortion (<0.001%), and compact, lightweight, cool-running designs.

Full story: https://www.headphonesty.com/2025/11/class-d-crushes-class-a-independent-tests/

https://www.facebook.com/share/p/1SPpfk2VmM/

1. Lower Total Harmonic Distortion
2. Increased Dynamic Range
3. Better Signal-to-Noise Ratio
4. Reduced Power Consumption
5. Compact and Lightweight Designs
I’m not an engineer so just guesses but I’ve now talked myself into being excited for the next wave of Class D using GaN components.

I suspect that class D by itself will be sufficient for the majority of listeners.

Audiophiles may want their class D amplifier designs mixed with class A to provide the distortion and sweetness that they want. A few companies do this.

It will be interesting to see if class H and class G amplifier designs are used more in the future.

Class D if done well is not going to be the weak link for any system (That is room or transducers), but there are a lot of ways to do it poorly.

Class G/H are not a clear win once you are running class D, but are a long standing and well tested technology in older power amplifiers at live event scale.

https://www.reddit.com/r/audiophile/comments/1e2cmhp/is_classd_technology_about_as_good_as_itll_ever/