I have tube, MOSFET, class A, A/B, D, vintage and modern amps and older AVRs for 2-channel. The computer age is making it to where even the budget stuff is climbing up high-end equipment's bum. When I rotate one type amp into place of another, after just a few minutes, whatever subtle, audible differences exist, are lost on me after a few minutes. I end up just using the most powerful, low maintenance 'do-all' one, which happens to be the old AVR, even for two-channel.
My second system is in my bedroom. In spite of having tube pre/headphone amp and a streamer to go with it, among others, I end up using the WiiM amp and a pair of 5" bookshelf speakers that don't even need subs at all, even though the WiiM has subwoofer accommodations and EQ. I have 4 subs I could use but just ended up not needing them.
I am not one to gawk at equipment when I listen. I prefer to read album credits and band history research instead so the electronics are mostly hidden. This is mostly why I use a PC or a phone as a source, so I can surf while I listen. With spotify, I leave it on the artist page and just zone out into the music, just like I used to do with album covers back in the day. Anything beyond that is a distraction to me, changing my otherwise musically immersive session, into an ambient one. The latter of which, I could get by with a portable radio without any fuss.
These days, in spite of what the charlatans of all this inflict, less is steadily becoming more. The fact that I can get my yah-yahs from a single, moderately powered class D streaming amp and a phone and just a pair of speakers says a lot. I end up being as proud of it, or perhaps even more so than my vintage stuff. Instead of getting all side-swiped into tube rolling and other quirky things, I have instead focused on optimizing efficient, minimalist equipment instead, with just very good speakers.
The two DIY speakers that have become favorites, a DIY tube Pre, a DIY Icepower class D amp, and a CD player. And now the WiiM has replaced these units and they reside in my bedroom now. I listen to these every night, and fight with it to beat it to the stop button before another good song comes on, each morning.
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Anymore, I believe much of this tube, DAC, opamp infatuations is people trying to somehow EQ/color the myriad of what amounts to overly bright speakers in production today.