Has anyone switched from Class AB/A to Class D? Was it better? Was it worse?

@dman777 I used class D amps for 80kW front end PA gig setup, and I am using AB/A class amps for home sys.. class D has too much harmonics at low output level, RF noise, “weird” pulse response.. 

@atmasphere +1 "If you know what you are doing you can build a class D amp that is in the driver’s seat rather than the back seat WRT any other kind of amplifier technology."

its applicable to everything! 

@niodari "You can certainly have a class D amplifier which is better than many class A ones” - better in what sense, max power perhaps? You may dial 500mW output @ 1kHz sine on any D class and A class amp and compare waveforms to understand D class problems better!

@niodari you may read about class D design here: https://people.engr.tamu.edu/s-sanchez/ECEN%20607%20Class%20D%202011.pdf

@atmasphere "Actually there are a few class D amps that have a better first Watt than a good number of class A amps.” - list of “few” and “good” ones will be helpful! 

Analog output filter question: how output filter is designed, order, phase v frequency., loading considerations (reactive speaker x-over + spkr-dr complex loading), R/L/C components tolerance, frequency dependency, aging / magnetic core inductors nonlinearity? 

@atmasphere "target load in mind, which might be 4 or 8 Ohms” - in my 40y + sound works I haven’t seen such speaker, with purely resistive load (2/4/6/8/12/16)! In order to design output filter properly, we need to take complex model of loading, including variety of speaker cables, DC protection relay ckt, speaker crossover, spkr driver/s complex, often resonating impedances, which is tremendous engineering task! I’ve used class D amps in PA systems with active x-overs, where spkr was driven directly by the amp with short cable and w/o any x-overs in the path. For home use, I would definitely look for class D amps if I need power efficiency, that’s it.