I would agree that while the 13r is great with the 1266 it’s not incredible and that amp suits the susvara a bit more, that being said still very good and potentially worthwhile
The 550/590 actually does a great job for the price but not on the same technical level as the bakoon
The Cavalli amps are also awesome but harder to find, but truly great synergy with the 1266 for something like the liquid gold
Holo I’d wait on lol
Would also wait on a Zahl anyways until there’s more actual info
Pass is a fantastic amp, but not really for the 1266 imo
The wells stuff to me isn’t all that appealing but some really like them, but you’d really want to make sure to buy used as I don’t think they’re great value new
If you wanted ss, look for a used formula s + poweman, it’s really got good synergy for the 1266 esp used, not as great with other cans though
Another fantastic ss option is a mass kobo 394ii but hard to find in the states but I really liked that for a cleaner option for the 1266
Getting into the higher end ranges for both tube and ss, personally some of my favorites for the 1266 would be the riviera AIC 10, viva egoista 845, woo WA33/EE, crayon cha 1, and some more obscure stuff like oji special and ac genus. A curveball that can actually be a great value used is an allnic hpa5000xl, worth a look
While I won’t try and suggest both, they sound very different and serve very different purposes regardless of similar tube type lol
It’s awesome, imo def not too warm with the right tube and dac pairing