Please, you have GOT to be kidding here!!! Your comment: "...Huh. I have only heard the Yamaha from many youtube videos (which on my system has accurately shown the sonic signature). All the Yamaha integrateds have a very bright and solid state sound...."
Euh, getting an accurate sonic signature from YouTube videos?
If you actually listen to a top-tier Yamaha, they actually have a very neutral yet smooth sonic delivery. Some will say a hint of tubes, but never, ever a bright solid state sound. I do not have any affiliation with Yamaha but have enjoyed both the AS2000 and AS3000 for years.
If you hear bright sound, I would look for something in your system as the culprit, maybe your speakers or current amplifier?
And please, do not judge sound from YouTube, it is very misleading and folks looking for good advice can be steered in the wrong direction if all you bring to the table is YouTube as a reference.