Watts! How many do we need?

@jfrmusic it was noted here in my post above.. you may ask Accuphase support and update us on their  detailed spec details for this AB amp design! 

Ok I’ll send them an email. They’re very responsive

@weatcoastaudiophile

Still don’t understand how you calculated your number from those specs but you were on the money. Here’s the response from Accuphase. 
 

The actual amount of Class A bias for the P-4600 is not a fixed amount and will vary depending on the load of the speaker.  For most speakers it should have around 8W – 10W of class A bias but that could be less for speakers if they have less than 4 ohm impedance.  The exact method for how Accuphase applies bias to its output transistors is considered proprietary information and they do not allow us to publish more than that.

@westcoastaudiophile

As a follow up I guess I’m mostly running in Class A since I have not been able push my meters pass 1 watt. 

@ifrmusic thanks for asking Accuphase support! being advanced analog circuit designer it’s not hard for me to estimate AB class amp linear (A class) range, sorry for not explaining to you all boring details of my calculation, which could be lengthy!