DAC/Amp for Beyerdynamic T1

Hello, I'm new here. I currenty enjoy a combo with Fiio X3 player, Fiio A5 amp, and Beyerdynamic DT880. I'm happy with this setup, and I really appreciate the natural sound and scene from the semi-open cans, but I'm planning to upgrade to the next level. My idea is to build a new desktop combo around Beyerdynamic T1 headphones. I think that a combination of THX AAA 789, plus SMSL SU-8 DAC can be a good combination, but I'm a beginner in audiophile world and I would like to receive some advice about this combo, and possible alternatives. My budget is about 1200€, but I can do a bit higher effort if I am sure of getting advantage from it. Thank you in advance!
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Own a late SN Gen 1 T1, they are fairly efficient but you need to ensure the amplifier can put out at least 10mw at 600 ohms or roughly 20ish mw into 300 ohms. Are you going to be running them with an XLR cable, the 789 power output is significantly higher via the XLR output. If you are going to run them single ended cable then the SMSL SP200 may be a better option as the power is the same from either output connection. Very comfy cans, use them most often with a Schiit Lyr (gen 1) using Phillips MiniWatt SQ tubes. That pairing has a wonderful soundstage. I've honestly not used my T1 much with my 789. I have used it with a Cayin iHA-6 and it is about the only headphone I own that can use the 120 ohm output option on that amp and not sound bad.
May 7, 2020
Many thanks for your feedback!
Most welcome, always happy to share my experience when it applies. Enjoy the new gear!