I bought a used T1.2 a couple of months back. It was in pristine condition and has a relatively early serial (29xxx).
I am not sure what to make of these headphones. I am using a topping D30 as DAC and Topping A30 and Little Dot MKIII as amplifiers.
They do sound sublime with classical music and jazz. They also excel with male voices. Female voices are a bit laid back but still presented nicely.
Modern Pop music or any kind of electronic music is a whole different story though. Not only do most songs sound kind of tinny, like from a laptop speaker, the highs are just piercing and shrill, it makes me wanna cry. They are fisting my ears until only a bloody mess is left. The same goes for gaming, where they aren't as painful, but their tuning makes most games just sound weird and locating enemies is just nigh impossible.
Tubes only make matters worse.
This leads to me reaching for my Sennheiser HD58x most of the time since they just work with all kinds of music as well as gaming. I also really like my Xelentos that I am using at work.
I am debating wether I should sell the T1 (and probably the Litttle Dot, too) and get a pair of DT1990s or T5P.2 instead.