Sorry, just going off assumption based on past price (and that holds no weight whatsoever). Maybe the change is permanent, maybe not.
What is the Topping product you speak of?
With HIFIMAN HE400SE, would you recommend the Ifi Zen DAC V2 or Schiit stack?
By "Schiit stack" I mean the Modi DAC and the Magni 3+ or Heresy (I can't tell the difference)