Thanks for the excellent post. Thoughtful and detailed. I am not in the market for a new amp, but have always wondered / been suspicious of Class D. Having been in this pursuit for over 50 years… new ideas frequently fail instantly to give the advertised benefits (like the CD).
Glad you addressed the look. I was really put off by the single tube look. While I am normally drawn mostly to sound quality… sometimes a look is just too off-putting, the Vivace is certainly that for me. But good to hear that in person they are better lookin.