But that's just it, Ian... It's ONLY your opinion. I've done a search here, and at R-A.com.

NOT ONE other post agreeing with that 'opinion'.

But hey, as long as YOU say it is so, it MUST be, eh? I mean, you've never shown ANY bias here before, have you? If yours are the ONLY ears hearing this 'problem' (and unable to hear the widely commented 'thin' Yamaha piano sound), might I suggest a trip to the audiologist...?