Sony Integrated What's Available ???????

I believe the 808 was the best Sony made. Not sure if it is the mst powerful though. The TA-F707ES is virtually the same inside but lacks the better speaker terminal and dampening material. Check this link out for info http://www.thevintageknob.org/SONY/sonyes/TAF707808ES/TAF707808ES.html
I have owned two 707s and think they are super amps for the $used. I modified both of them with better internal wiring and binding posts. Although it is now in my closet, you can see my mods by clicking on my system.

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.

TA-F808ES is a stunning amp, you wont regret owning one!

Unless you have to lift it :P