They are often described as having a more natural sound due to their minimal feedback requirements, which helps avoid harshness
@mapman This bit is nonsense, just so you know. The use of GaNFETs has nothing to do with how much feedback is or isn't used.
Capable of driving difficult loads, such as planar or electrostatic speakers,
This bit is only true if the amp employs a fair bit of feedback. Otherwise it can be load variant.
GanFET technology offers several advantages over traditional Class D amplifiers, particularly in sound quality and efficiency.
The main advantages are lower parasitic noise due to reduced inductances, and a lower turn on resistance resulting in less heat.