A long time ago Yamaha made a AVR amp called an A-2070 ,which sold for a lot of money then. I was fooled by all the hype of the time to buy one of these, which I still have , by the way. I never was impressed by the musical or HT sound of this amp but because it cost me so much I kept it.I bought a Harmon Kardon amp for much less which gave me the sound I wanted ,musically and HT wise. Affirmative shopping one night took this amp but left the Yamaha.I replaced the stolen HK with a denon, which also gave me good sound in both forms,music and HT.Affirmative shopping about a year later took my Denon away,and still the Yamaha was left behind. Tell me ,do the affirmative shoppers know something that we dont ? as far as Yamaha is concerned? I know exactly what you mean by being disappointed in the Yamaha "upgrade" and although I have tried every form of cable with batteries etc, the yamaha keeps giving me its unacceptabl to me, "natural sound".
My 2c worth. and my sympathy