Amp recommendations for Hifiman HE1000 V2

What’s your budget?

iFi Pro iCan 

I have the Hifiman HE400S so am somewhat familiar with the house sound, and if I’m you I’d be looking hard at the Singxer SA-1 amp. At only $599 it’s a fully balanced, Class-A design with plenty of power and exhibits the sound qualities you’re looking for, and you’d probably need to spend quite a bit more to get something significantly better. I believe your ‘phones come with balanced connectors so you’ll get the full benefits of the balanced design right out of the box.  Hope this helps, and best of luck.