The TA-F808ES was definitely Sony's best. It's biased to Class A as well as being high current. No question, it would be an upgrade from your receiver. I don't believe Sony ever made an integrated with more than 100wpc.
BTW, there is one for sale on Audiogon right now. In the interest of full disclosure, the seller is a friend of mine.
BTW, there is one for sale on Audiogon right now. In the interest of full disclosure, the seller is a friend of mine.