Well, looky here! Seems like a good place to start

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I am looking to pick up a Modi Multibit along with a Magni 3 and a Vali to either split via a Y connector or just use the SYS in a reverse configuration. These would be connected to one of 3 sets of cans, the ATH-M50x, Grado SR225e or the Massdrop HD6XX. I am looking for input on this stack/can combo. I'm sure parts of this have been asked before but this thread is huge. Any input from present users would be welcome.
For instance, I am getting the Vali as an intro to tube amps for myself. Would you recommend this? Or would you say scrap that idea and just go with a Jotunheim instead of the two amps/ especially with my current lineup of headphones. I am planning on getting a higher end set of closed-backs and/or a set of Hifiman HE4XX or Monoliths in the future.
Looking forward to chatting!