Class A Power in A/B amplifiers?


Is there a general industry standard for the amount of Class A power in Class A/B amplifiers?For instance SimAudio has always touted that they run Class A for the first 5 watts.Curious how other higher end manufacturers approach this..
freediver
Some interesting insight.
@gs5556"There really is no such class as Class AB, it is used to describe the mode of operation when a Class A amp hits a low impedance and one of the pairs of output transistors stops conducting"..Would this mean that by keeping the load impedance stable & highish it would keep the amplifier operating in Class A longer?
Moot points; class D ihas already supassed these others. See my review of Legacy Audio i.V4 Ultra at Dagogo.com 

Imo, such conversations are remnants of a past era of amplification. 
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Hi Douglas, I will definitely read the review and I keep hearing amazing things about Gan powered amps. I am waiting for a reasonably priced HT multi channel amp with Gan.  
There are other factors of amp sound, like the tube input stage of my BHK300 amps.  Bascomb/PS Audio just couldn’t get anything with a solid state input section to sound as good as a tube input section. 
One theory of why tubes sound so good (aside from the space between components) is that there are more electrons to flow and you seemed to indicate in the review that Gan has more electrons to flow (if I’m reading it correctly).

I don’t plan to ever give up my BHK’s but I could definitely see Gan based devices being in my Arsenal of gear.