After A/B for many years, I used pure Class D from about 2008. It was a bit early days, dynamic but not the best sound quality. I tried a pure Class A amplifier and complained about poor dynamics. I then used Quad amplifiers, which are Class A voltage Class B current hybrid amplifiers, lots of nice clean power and cheap, but lack a bit of dynamics. For the last 6 years I’ve used a Class A voltage Class D current hybrid amplifier that is ultra low distortion and incredibly dynamic, and no thoughts of changing.
The nCore power supplies and amplifiers perform so well it makes sense to use them as plug-in modules in integrated units., which many manufacturers do. Saves re-inventing the wheel.