The rating is arbitrary and relative to my liking, so don't be upset with my rating if you disagree.
Schiit Bifrost 2 - 4/10 - My first R2R dac (even though chip based). Sounded nice with its Unison USB, not as nice with Coax. Hated the relay clicking sound though, so got rid of it.
Cavalli Audio Liquid Carbon V2 - 3/10 - Was excited at first to get one of Alex Cavalli's amplifier, since they don't make these anymore, fell for the hype, did not like it and sold it.
iFi Diablo - 5/10 - Very potent portable amplifier/dac combo, did like its tuning, but not its MQA implementation, nor build quality, did not sound as natural as other DACs, since then sold it.
Romi Audio BX-2 Plus - 8/10 - Absolute powerhouse of a portable amp, battery powered, super light and very transparent/neutral/resolving - sold it as I don't have a use case for it anymore, but great value for money and totally recommend to others.
Violetric HPA V281 FE - 7/10 - VERY powerful amplifier, pronounced but well controlled bass, can powerful anything (including Susvara or AB-1266), but prefer clean sound of my HTT2, so sold it.
Chord Hugo 2 - 7/10 - Very nice sounding DAC, battery powered, but overheats when playing and charging, a bit underpowered for power hungry headphones. Sold since to upgrade to HTT2.
Chord Hugo TT 2 - 9/10 - What a wonderful DAC, love its clean sound, a pity it does not have 4-pin XLR headphone jack and one has to buy adapter for 2x3-pin. Keeping this one.
Chord 2Go - 1/10 - Absolutely not working for my use case, which I have written about in
here.
Dan Clark Ether CX - 4/10 - OKish sounding closed back, very nice comfort, hated the stock cable, since then sold it.
Hifiman Arya - 5/10 - Soundstage was nice, more resolving than Ether CX, but decided to sell.
Focal Clear - 5/10 - Nice dynamics and slam, better than Ether CX, side-grade to Arya, decided to sell.
Abyss Diana V2 - 9/10 - Nice resolving headphone, like the tuning and quality control, minus point for comfort (could be more padded on the top). Decided to sell in order to fund AB-1266 TC upgrade.
Abyss Superconductor - 3/10 - An upgraded (and very expensive) cable for Dianas, which made it sound better, but was so annoying as it is literally two cables instead of one, plus not so nice to the touch as I expected. Decided to sell.
And yes, I bought and sold a lot in the last 2 months, haha.