@gbmcleod I really intended this thread more for empathy of the constant struggle of wanting to hear everything but being limited by life, and my current ongoing distraction is a fixation with amps. I feel like I know what I'd upgrade every piece in my system with if I came into a pile of cash... except my amp. That's what's really sparked the curiosity.
But let me see if I can unpack my thoughts. The number one think I love about my Mastersound Dueventi is the vocal tone. That easily is the standout feature in my mind. String instruments are also a strong performer in my opinion. Other elements I really enjoy are depth of soundstage, and very respectable imaging. My speakers also have quite fast bass, but trades off with fairly light bass impact. It's a texture over slam pairing, and when faced with a choice, I would keep the texture even if it means giving up on some slam.
If I can find an amp that matches the Mastersound tone, that will spark my interest. If I can avoid tube maintenance, that will get me to consider it as a real potential option. If it can open up the top end with a little more resolution, I know my system can benefit from that. If it can also provide a little more low end punch without getting flabby... well then I would likely start to save obsessively until I can make the jump.
I'll also add that I absolutely prefer a sweeter top end. I admittedly listen to a number of poor recordings, and I don't ever want a system to be analytical to the extent that is just exposes all the flaws in a recording and makes some of my favorite albums from my life unenjoyable. After a journey of amps, I may very well land right back at my Mastersound. But I think I do need to start the journey.